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Переработка лабораторных работ, связанных с памятью (#89)
* Переработка лабораторных работ, связанных с памятью Существенно переработаны ЛР3 и ЛР7: Из ЛР3 убрано задание реализовать память данных. Эта память использовалась только студентами ИВТ и только в рамках одной лабы. В итоге использовалась готовая память, и ничего не мешает использовать ее с самого начала. Задание по реализации памяти инструкций также претерпело изменения. Теперь код памяти инструкций предоставляется сразу. Это объясняется тем, что код модуля состоит в общем-то из 4х строк, на которые тратится слишком много времени (с учетом добавления тестбенча и проверок). Кроме того, использование готового кода позволяет дать модуль чуть посложнее (с параметризацией размера). По итогу правок, третья лабораторная работа превращается чисто в лабораторную по написанию регистрового файла, что должно положительно сказаться на кривой сложности лаб. После второй лабы происходит слишком резкий скачок в объемах работы. Соответственно, в связи с тем, что память данных больше не делается на третьей лабе, дополнительная ЛР по памяти данных с byte enable необходимо перенести до реализации тракта данных. * ЛР3, 5, 6. Правки из ревью * ЛР7. Добавление иллюстраций
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46
Labs/07. Datapath/board files/README.md
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Labs/07. Datapath/board files/README.md
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# Проверка работы riscv_unit на ПЛИС
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После того, как вы проверили на моделировании дизайн, вам необходимо проверить его работу на прототипе в ПЛИС.
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Инструкция по реализации прототипа описана [здесь](../../../Vivado%20Basics/How%20to%20program%20an%20fpga%20board.md).
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На _рис. 1_ представлена схема прототипа в ПЛИС.
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_Рисунок 1. Структурная схема модуля `nexys_riscv_unit`._
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Прототип позволяет потактово исполнять программу, прошитую в память инструкций. Также прототип отображает операцию исполняемую в данный момент.
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> [!NOTE]
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> Объект модуля `riscv_core` в модуле `riscv_unit` **должен** называться `core`. Т.е. строка создания сущности модуля должна выглядеть следующим образом: `riscv_core core(...)`.
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## Описание используемой периферии
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- ### Кнопки
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- `BTND` — при нажатии создает тактовый импульс, поступающий на порт тактирования `clk_i` модуля дизайна. Стоит помнить то, что инструкции, работающие с внешней памятью, требуют несколько тактов для своего выполнения.
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- `CPU_RESET` — соединен со входом `rst_i` модуля дизайна. Поскольку в модуле `riscv_unit` используется синхронный сброс (то есть сигнал сброса учитывается только во время восходящего фронта тактового сигнала), то для сброса модуля `riscv_unit` и вложенных в него модулей необходимо при зажатой кнопке сброса еще нажать кнопку тактирования.
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- ### Семисегментные индикаторы
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Семисегментные индикаторы разбиты на 2 блока (см. _рис. 1_):
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- `PC` — отображают в виде шестнадцатеричного числа младшие 16 бит программного счетчика, которые вычисляются на основе выхода `instr_addr_o` модуля процессорного ядра.
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- `operation` — отображают [операцию](#операции-отображаемые-прототипом), исполняемую процессором на текущем такте.
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## Операции, отображаемые прототипом
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Прототип определяет тип операции по младшим 7 битам инструкции.
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Если тип операции является легальным в рамках процессорного устройства, реализуемого на лабораторных работах, то отображается соответствующий опкод. Опкоды описаны в [decoder_pkg.sv](../../05.%20Main%20decoder/decoder_pkg.sv). Если определенный прототипом тип операции является нелегальным, то на семисегментных индикаторах отображается `ILL` (от **ill**egal).
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Соответствие операции ее отображению на семисегментных индикаторах представлено на _рис. 2_:
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_Рисунок 2. Соответствие операции ее отображению на семисегментных индикаторах._
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## Демонстрационная программа
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В качестве демонстрационной программы, предлагается использовать [program.mem](../program.mem). Описание ее работы можно прочитать в разделе [#задание](../README.md#задание).
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211
Labs/07. Datapath/board files/nexys_a7_100t.xdc
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Labs/07. Datapath/board files/nexys_a7_100t.xdc
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## This file is a general .xdc for the Nexys A7-100T
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## To use it in a project:
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## - uncomment the lines corresponding to used pins
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## - rename the used ports (in each line, after get_ports) according to the top level signal names in the project
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# Clock signal
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set_property -dict { PACKAGE_PIN E3 IOSTANDARD LVCMOS33 } [get_ports { clk_i }]; #IO_L12P_T1_MRCC_35 Sch=clk100mhz
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create_clock -add -name sys_clk_pin -period 10.00 -waveform {0 5} [get_ports {clk_i}];
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#Switches
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#set_property -dict { PACKAGE_PIN J15 IOSTANDARD LVCMOS33 } [get_ports { SW[0] }]; #IO_L24N_T3_RS0_15 Sch=sw[0]
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#set_property -dict { PACKAGE_PIN L16 IOSTANDARD LVCMOS33 } [get_ports { SW[1] }]; #IO_L3N_T0_DQS_EMCCLK_14 Sch=sw[1]
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#set_property -dict { PACKAGE_PIN M13 IOSTANDARD LVCMOS33 } [get_ports { SW[2] }]; #IO_L6N_T0_D08_VREF_14 Sch=sw[2]
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#set_property -dict { PACKAGE_PIN R15 IOSTANDARD LVCMOS33 } [get_ports { SW[3] }]; #IO_L13N_T2_MRCC_14 Sch=sw[3]
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#set_property -dict { PACKAGE_PIN R17 IOSTANDARD LVCMOS33 } [get_ports { SW[4] }]; #IO_L12N_T1_MRCC_14 Sch=sw[4]
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#set_property -dict { PACKAGE_PIN T18 IOSTANDARD LVCMOS33 } [get_ports { SW[5] }]; #IO_L7N_T1_D10_14 Sch=sw[5]
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#set_property -dict { PACKAGE_PIN U18 IOSTANDARD LVCMOS33 } [get_ports { SW[6] }]; #IO_L17N_T2_A13_D29_14 Sch=sw[6]
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#set_property -dict { PACKAGE_PIN R13 IOSTANDARD LVCMOS33 } [get_ports { SW[7] }]; #IO_L5N_T0_D07_14 Sch=sw[7]
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#set_property -dict { PACKAGE_PIN T8 IOSTANDARD LVCMOS18 } [get_ports { SW[8] }]; #IO_L24N_T3_34 Sch=sw[8]
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#set_property -dict { PACKAGE_PIN U8 IOSTANDARD LVCMOS18 } [get_ports { SW[9] }]; #IO_25_34 Sch=sw[9]
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#set_property -dict { PACKAGE_PIN R16 IOSTANDARD LVCMOS33 } [get_ports { SW[10] }]; #IO_L15P_T2_DQS_RDWR_B_14 Sch=sw[10]
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#set_property -dict { PACKAGE_PIN T13 IOSTANDARD LVCMOS33 } [get_ports { SW[11] }]; #IO_L23P_T3_A03_D19_14 Sch=sw[11]
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#set_property -dict { PACKAGE_PIN H6 IOSTANDARD LVCMOS33 } [get_ports { SW[12] }]; #IO_L24P_T3_35 Sch=sw[12]
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#set_property -dict { PACKAGE_PIN U12 IOSTANDARD LVCMOS33 } [get_ports { SW[13] }]; #IO_L20P_T3_A08_D24_14 Sch=sw[13]
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#set_property -dict { PACKAGE_PIN U11 IOSTANDARD LVCMOS33 } [get_ports { SW[14] }]; #IO_L19N_T3_A09_D25_VREF_14 Sch=sw[14]
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#set_property -dict { PACKAGE_PIN V10 IOSTANDARD LVCMOS33 } [get_ports { SW[15] }]; #IO_L21P_T3_DQS_14 Sch=sw[15]
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### LEDs
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#set_property -dict { PACKAGE_PIN H17 IOSTANDARD LVCMOS33 } [get_ports { LED[0] }]; #IO_L18P_T2_A24_15 Sch=led[0]
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#set_property -dict { PACKAGE_PIN K15 IOSTANDARD LVCMOS33 } [get_ports { LED[1] }]; #IO_L24P_T3_RS1_15 Sch=led[1]
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#set_property -dict { PACKAGE_PIN J13 IOSTANDARD LVCMOS33 } [get_ports { LED[2] }]; #IO_L17N_T2_A25_15 Sch=led[2]
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#set_property -dict { PACKAGE_PIN N14 IOSTANDARD LVCMOS33 } [get_ports { LED[3] }]; #IO_L8P_T1_D11_14 Sch=led[3]
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#set_property -dict { PACKAGE_PIN R18 IOSTANDARD LVCMOS33 } [get_ports { LED[4] }]; #IO_L7P_T1_D09_14 Sch=led[4]
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#set_property -dict { PACKAGE_PIN V17 IOSTANDARD LVCMOS33 } [get_ports { LED[5] }]; #IO_L18N_T2_A11_D27_14 Sch=led[5]
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#set_property -dict { PACKAGE_PIN U17 IOSTANDARD LVCMOS33 } [get_ports { LED[6] }]; #IO_L17P_T2_A14_D30_14 Sch=led[6]
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#set_property -dict { PACKAGE_PIN U16 IOSTANDARD LVCMOS33 } [get_ports { LED[7] }]; #IO_L18P_T2_A12_D28_14 Sch=led[7]
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#set_property -dict { PACKAGE_PIN V16 IOSTANDARD LVCMOS33 } [get_ports { LED[8] }]; #IO_L16N_T2_A15_D31_14 Sch=led[8]
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#set_property -dict { PACKAGE_PIN T15 IOSTANDARD LVCMOS33 } [get_ports { LED[9] }]; #IO_L14N_T2_SRCC_14 Sch=led[9]
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#set_property -dict { PACKAGE_PIN U14 IOSTANDARD LVCMOS33 } [get_ports { LED[10] }]; #IO_L22P_T3_A05_D21_14 Sch=led[10]
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#set_property -dict { PACKAGE_PIN T16 IOSTANDARD LVCMOS33 } [get_ports { LED[11] }]; #IO_L15N_T2_DQS_DOUT_CSO_B_14 Sch=led[11]
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#set_property -dict { PACKAGE_PIN V15 IOSTANDARD LVCMOS33 } [get_ports { LED[12] }]; #IO_L16P_T2_CSI_B_14 Sch=led[12]
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#set_property -dict { PACKAGE_PIN V14 IOSTANDARD LVCMOS33 } [get_ports { LED[13] }]; #IO_L22N_T3_A04_D20_14 Sch=led[13]
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#set_property -dict { PACKAGE_PIN V12 IOSTANDARD LVCMOS33 } [get_ports { LED[14] }]; #IO_L20N_T3_A07_D23_14 Sch=led[14]
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#set_property -dict { PACKAGE_PIN V11 IOSTANDARD LVCMOS33 } [get_ports { LED[15] }]; #IO_L21N_T3_DQS_A06_D22_14 Sch=led[15]
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### RGB LEDs
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#set_property -dict { PACKAGE_PIN R12 IOSTANDARD LVCMOS33 } [get_ports { LED16_B }]; #IO_L5P_T0_D06_14 Sch=led16_b
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#set_property -dict { PACKAGE_PIN M16 IOSTANDARD LVCMOS33 } [get_ports { LED16_G }]; #IO_L10P_T1_D14_14 Sch=led16_g
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#set_property -dict { PACKAGE_PIN N15 IOSTANDARD LVCMOS33 } [get_ports { LED16_R }]; #IO_L11P_T1_SRCC_14 Sch=led16_r
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#set_property -dict { PACKAGE_PIN G14 IOSTANDARD LVCMOS33 } [get_ports { LED17_B }]; #IO_L15N_T2_DQS_ADV_B_15 Sch=led17_b
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#set_property -dict { PACKAGE_PIN R11 IOSTANDARD LVCMOS33 } [get_ports { LED17_G }]; #IO_0_14 Sch=led17_g
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#set_property -dict { PACKAGE_PIN N16 IOSTANDARD LVCMOS33 } [get_ports { LED17_R }]; #IO_L11N_T1_SRCC_14 Sch=led17_r
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##7 segment display
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set_property -dict { PACKAGE_PIN T10 IOSTANDARD LVCMOS33 } [get_ports { ca_o }]; #IO_L24N_T3_A00_D16_14 Sch=ca
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set_property -dict { PACKAGE_PIN R10 IOSTANDARD LVCMOS33 } [get_ports { cb_o }]; #IO_25_14 Sch=cb
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set_property -dict { PACKAGE_PIN K16 IOSTANDARD LVCMOS33 } [get_ports { cc_o }]; #IO_25_15 Sch=cc
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set_property -dict { PACKAGE_PIN K13 IOSTANDARD LVCMOS33 } [get_ports { cd_o }]; #IO_L17P_T2_A26_15 Sch=cd
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set_property -dict { PACKAGE_PIN P15 IOSTANDARD LVCMOS33 } [get_ports { ce_o }]; #IO_L13P_T2_MRCC_14 Sch=ce
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set_property -dict { PACKAGE_PIN T11 IOSTANDARD LVCMOS33 } [get_ports { cf_o }]; #IO_L19P_T3_A10_D26_14 Sch=cf
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set_property -dict { PACKAGE_PIN L18 IOSTANDARD LVCMOS33 } [get_ports { cg_o }]; #IO_L4P_T0_D04_14 Sch=cg
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set_property -dict { PACKAGE_PIN H15 IOSTANDARD LVCMOS33 } [get_ports { dp_o }]; #IO_L19N_T3_A21_VREF_15 Sch=dp
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set_property -dict { PACKAGE_PIN J17 IOSTANDARD LVCMOS33 } [get_ports { an_o[0] }]; #IO_L23P_T3_FOE_B_15 Sch=an[0]
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set_property -dict { PACKAGE_PIN J18 IOSTANDARD LVCMOS33 } [get_ports { an_o[1] }]; #IO_L23N_T3_FWE_B_15 Sch=an[1]
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set_property -dict { PACKAGE_PIN T9 IOSTANDARD LVCMOS33 } [get_ports { an_o[2] }]; #IO_L24P_T3_A01_D17_14 Sch=an[2]
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set_property -dict { PACKAGE_PIN J14 IOSTANDARD LVCMOS33 } [get_ports { an_o[3] }]; #IO_L19P_T3_A22_15 Sch=an[3]
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set_property -dict { PACKAGE_PIN P14 IOSTANDARD LVCMOS33 } [get_ports { an_o[4] }]; #IO_L8N_T1_D12_14 Sch=an[4]
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set_property -dict { PACKAGE_PIN T14 IOSTANDARD LVCMOS33 } [get_ports { an_o[5] }]; #IO_L14P_T2_SRCC_14 Sch=an[5]
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set_property -dict { PACKAGE_PIN K2 IOSTANDARD LVCMOS33 } [get_ports { an_o[6] }]; #IO_L23P_T3_35 Sch=an[6]
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set_property -dict { PACKAGE_PIN U13 IOSTANDARD LVCMOS33 } [get_ports { an_o[7] }]; #IO_L23N_T3_A02_D18_14 Sch=an[7]
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##Buttons
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set_property -dict { PACKAGE_PIN C12 IOSTANDARD LVCMOS33 } [get_ports { arstn_i }]; #IO_L3P_T0_DQS_AD1P_15 Sch=cpu_resetn
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#set_property -dict { PACKAGE_PIN N17 IOSTANDARD LVCMOS33 } [get_ports { BTNC }]; #IO_L9P_T1_DQS_14 Sch=btnc
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#set_property -dict { PACKAGE_PIN M18 IOSTANDARD LVCMOS33 } [get_ports { BTNU }]; #IO_L4N_T0_D05_14 Sch=btnu
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#set_property -dict { PACKAGE_PIN P17 IOSTANDARD LVCMOS33 } [get_ports { BTNL }]; #IO_L12P_T1_MRCC_14 Sch=btnl
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#set_property -dict { PACKAGE_PIN M17 IOSTANDARD LVCMOS33 } [get_ports { BTNR }]; #IO_L10N_T1_D15_14 Sch=btnr
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set_property -dict { PACKAGE_PIN P18 IOSTANDARD LVCMOS33 } [get_ports { btnd_i }]; #IO_L9N_T1_DQS_D13_14 Sch=btnd
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##Pmod Headers
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##Pmod Header JA
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#set_property -dict { PACKAGE_PIN C17 IOSTANDARD LVCMOS33 } [get_ports { JA[1] }]; #IO_L20N_T3_A19_15 Sch=ja[1]
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#set_property -dict { PACKAGE_PIN D18 IOSTANDARD LVCMOS33 } [get_ports { JA[2] }]; #IO_L21N_T3_DQS_A18_15 Sch=ja[2]
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#set_property -dict { PACKAGE_PIN E18 IOSTANDARD LVCMOS33 } [get_ports { JA[3] }]; #IO_L21P_T3_DQS_15 Sch=ja[3]
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#set_property -dict { PACKAGE_PIN G17 IOSTANDARD LVCMOS33 } [get_ports { JA[4] }]; #IO_L18N_T2_A23_15 Sch=ja[4]
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#set_property -dict { PACKAGE_PIN D17 IOSTANDARD LVCMOS33 } [get_ports { JA[7] }]; #IO_L16N_T2_A27_15 Sch=ja[7]
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#set_property -dict { PACKAGE_PIN E17 IOSTANDARD LVCMOS33 } [get_ports { JA[8] }]; #IO_L16P_T2_A28_15 Sch=ja[8]
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#set_property -dict { PACKAGE_PIN F18 IOSTANDARD LVCMOS33 } [get_ports { JA[9] }]; #IO_L22N_T3_A16_15 Sch=ja[9]
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#set_property -dict { PACKAGE_PIN G18 IOSTANDARD LVCMOS33 } [get_ports { JA[10] }]; #IO_L22P_T3_A17_15 Sch=ja[10]
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##Pmod Header JB
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#set_property -dict { PACKAGE_PIN D14 IOSTANDARD LVCMOS33 } [get_ports { JB[1] }]; #IO_L1P_T0_AD0P_15 Sch=jb[1]
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#set_property -dict { PACKAGE_PIN F16 IOSTANDARD LVCMOS33 } [get_ports { JB[2] }]; #IO_L14N_T2_SRCC_15 Sch=jb[2]
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#set_property -dict { PACKAGE_PIN G16 IOSTANDARD LVCMOS33 } [get_ports { JB[3] }]; #IO_L13N_T2_MRCC_15 Sch=jb[3]
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#set_property -dict { PACKAGE_PIN H14 IOSTANDARD LVCMOS33 } [get_ports { JB[4] }]; #IO_L15P_T2_DQS_15 Sch=jb[4]
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#set_property -dict { PACKAGE_PIN E16 IOSTANDARD LVCMOS33 } [get_ports { JB[7] }]; #IO_L11N_T1_SRCC_15 Sch=jb[7]
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#set_property -dict { PACKAGE_PIN F13 IOSTANDARD LVCMOS33 } [get_ports { JB[8] }]; #IO_L5P_T0_AD9P_15 Sch=jb[8]
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#set_property -dict { PACKAGE_PIN G13 IOSTANDARD LVCMOS33 } [get_ports { JB[9] }]; #IO_0_15 Sch=jb[9]
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#set_property -dict { PACKAGE_PIN H16 IOSTANDARD LVCMOS33 } [get_ports { JB[10] }]; #IO_L13P_T2_MRCC_15 Sch=jb[10]
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##Pmod Header JC
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#set_property -dict { PACKAGE_PIN K1 IOSTANDARD LVCMOS33 } [get_ports { JC[1] }]; #IO_L23N_T3_35 Sch=jc[1]
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#set_property -dict { PACKAGE_PIN F6 IOSTANDARD LVCMOS33 } [get_ports { JC[2] }]; #IO_L19N_T3_VREF_35 Sch=jc[2]
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#set_property -dict { PACKAGE_PIN J2 IOSTANDARD LVCMOS33 } [get_ports { JC[3] }]; #IO_L22N_T3_35 Sch=jc[3]
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#set_property -dict { PACKAGE_PIN G6 IOSTANDARD LVCMOS33 } [get_ports { JC[4] }]; #IO_L19P_T3_35 Sch=jc[4]
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#set_property -dict { PACKAGE_PIN E7 IOSTANDARD LVCMOS33 } [get_ports { JC[7] }]; #IO_L6P_T0_35 Sch=jc[7]
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#set_property -dict { PACKAGE_PIN J3 IOSTANDARD LVCMOS33 } [get_ports { JC[8] }]; #IO_L22P_T3_35 Sch=jc[8]
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#set_property -dict { PACKAGE_PIN J4 IOSTANDARD LVCMOS33 } [get_ports { JC[9] }]; #IO_L21P_T3_DQS_35 Sch=jc[9]
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#set_property -dict { PACKAGE_PIN E6 IOSTANDARD LVCMOS33 } [get_ports { JC[10] }]; #IO_L5P_T0_AD13P_35 Sch=jc[10]
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##Pmod Header JD
|
||||
#set_property -dict { PACKAGE_PIN H4 IOSTANDARD LVCMOS33 } [get_ports { JD[1] }]; #IO_L21N_T3_DQS_35 Sch=jd[1]
|
||||
#set_property -dict { PACKAGE_PIN H1 IOSTANDARD LVCMOS33 } [get_ports { JD[2] }]; #IO_L17P_T2_35 Sch=jd[2]
|
||||
#set_property -dict { PACKAGE_PIN G1 IOSTANDARD LVCMOS33 } [get_ports { JD[3] }]; #IO_L17N_T2_35 Sch=jd[3]
|
||||
#set_property -dict { PACKAGE_PIN G3 IOSTANDARD LVCMOS33 } [get_ports { JD[4] }]; #IO_L20N_T3_35 Sch=jd[4]
|
||||
#set_property -dict { PACKAGE_PIN H2 IOSTANDARD LVCMOS33 } [get_ports { JD[7] }]; #IO_L15P_T2_DQS_35 Sch=jd[7]
|
||||
#set_property -dict { PACKAGE_PIN G4 IOSTANDARD LVCMOS33 } [get_ports { JD[8] }]; #IO_L20P_T3_35 Sch=jd[8]
|
||||
#set_property -dict { PACKAGE_PIN G2 IOSTANDARD LVCMOS33 } [get_ports { JD[9] }]; #IO_L15N_T2_DQS_35 Sch=jd[9]
|
||||
#set_property -dict { PACKAGE_PIN F3 IOSTANDARD LVCMOS33 } [get_ports { JD[10] }]; #IO_L13N_T2_MRCC_35 Sch=jd[10]
|
||||
|
||||
##Pmod Header JXADC
|
||||
#set_property -dict { PACKAGE_PIN A14 IOSTANDARD LVCMOS33 } [get_ports { XA_N[1] }]; #IO_L9N_T1_DQS_AD3N_15 Sch=xa_n[1]
|
||||
#set_property -dict { PACKAGE_PIN A13 IOSTANDARD LVCMOS33 } [get_ports { XA_P[1] }]; #IO_L9P_T1_DQS_AD3P_15 Sch=xa_p[1]
|
||||
#set_property -dict { PACKAGE_PIN A16 IOSTANDARD LVCMOS33 } [get_ports { XA_N[2] }]; #IO_L8N_T1_AD10N_15 Sch=xa_n[2]
|
||||
#set_property -dict { PACKAGE_PIN A15 IOSTANDARD LVCMOS33 } [get_ports { XA_P[2] }]; #IO_L8P_T1_AD10P_15 Sch=xa_p[2]
|
||||
#set_property -dict { PACKAGE_PIN B17 IOSTANDARD LVCMOS33 } [get_ports { XA_N[3] }]; #IO_L7N_T1_AD2N_15 Sch=xa_n[3]
|
||||
#set_property -dict { PACKAGE_PIN B16 IOSTANDARD LVCMOS33 } [get_ports { XA_P[3] }]; #IO_L7P_T1_AD2P_15 Sch=xa_p[3]
|
||||
#set_property -dict { PACKAGE_PIN A18 IOSTANDARD LVCMOS33 } [get_ports { XA_N[4] }]; #IO_L10N_T1_AD11N_15 Sch=xa_n[4]
|
||||
#set_property -dict { PACKAGE_PIN B18 IOSTANDARD LVCMOS33 } [get_ports { XA_P[4] }]; #IO_L10P_T1_AD11P_15 Sch=xa_p[4]
|
||||
|
||||
##VGA Connector
|
||||
#set_property -dict { PACKAGE_PIN A3 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[0] }]; #IO_L8N_T1_AD14N_35 Sch=vga_r[0]
|
||||
#set_property -dict { PACKAGE_PIN B4 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[1] }]; #IO_L7N_T1_AD6N_35 Sch=vga_r[1]
|
||||
#set_property -dict { PACKAGE_PIN C5 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[2] }]; #IO_L1N_T0_AD4N_35 Sch=vga_r[2]
|
||||
#set_property -dict { PACKAGE_PIN A4 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[3] }]; #IO_L8P_T1_AD14P_35 Sch=vga_r[3]
|
||||
#set_property -dict { PACKAGE_PIN C6 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[0] }]; #IO_L1P_T0_AD4P_35 Sch=vga_g[0]
|
||||
#set_property -dict { PACKAGE_PIN A5 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[1] }]; #IO_L3N_T0_DQS_AD5N_35 Sch=vga_g[1]
|
||||
#set_property -dict { PACKAGE_PIN B6 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[2] }]; #IO_L2N_T0_AD12N_35 Sch=vga_g[2]
|
||||
#set_property -dict { PACKAGE_PIN A6 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[3] }]; #IO_L3P_T0_DQS_AD5P_35 Sch=vga_g[3]
|
||||
#set_property -dict { PACKAGE_PIN B7 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[0] }]; #IO_L2P_T0_AD12P_35 Sch=vga_b[0]
|
||||
#set_property -dict { PACKAGE_PIN C7 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[1] }]; #IO_L4N_T0_35 Sch=vga_b[1]
|
||||
#set_property -dict { PACKAGE_PIN D7 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[2] }]; #IO_L6N_T0_VREF_35 Sch=vga_b[2]
|
||||
#set_property -dict { PACKAGE_PIN D8 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[3] }]; #IO_L4P_T0_35 Sch=vga_b[3]
|
||||
#set_property -dict { PACKAGE_PIN B11 IOSTANDARD LVCMOS33 } [get_ports { VGA_HS }]; #IO_L4P_T0_15 Sch=vga_hs
|
||||
#set_property -dict { PACKAGE_PIN B12 IOSTANDARD LVCMOS33 } [get_ports { VGA_VS }]; #IO_L3N_T0_DQS_AD1N_15 Sch=vga_vs
|
||||
|
||||
##Micro SD Connector
|
||||
#set_property -dict { PACKAGE_PIN E2 IOSTANDARD LVCMOS33 } [get_ports { SD_RESET }]; #IO_L14P_T2_SRCC_35 Sch=sd_reset
|
||||
#set_property -dict { PACKAGE_PIN A1 IOSTANDARD LVCMOS33 } [get_ports { SD_CD }]; #IO_L9N_T1_DQS_AD7N_35 Sch=sd_cd
|
||||
#set_property -dict { PACKAGE_PIN B1 IOSTANDARD LVCMOS33 } [get_ports { SD_SCK }]; #IO_L9P_T1_DQS_AD7P_35 Sch=sd_sck
|
||||
#set_property -dict { PACKAGE_PIN C1 IOSTANDARD LVCMOS33 } [get_ports { SD_CMD }]; #IO_L16N_T2_35 Sch=sd_cmd
|
||||
#set_property -dict { PACKAGE_PIN C2 IOSTANDARD LVCMOS33 } [get_ports { SD_DAT[0] }]; #IO_L16P_T2_35 Sch=sd_dat[0]
|
||||
#set_property -dict { PACKAGE_PIN E1 IOSTANDARD LVCMOS33 } [get_ports { SD_DAT[1] }]; #IO_L18N_T2_35 Sch=sd_dat[1]
|
||||
#set_property -dict { PACKAGE_PIN F1 IOSTANDARD LVCMOS33 } [get_ports { SD_DAT[2] }]; #IO_L18P_T2_35 Sch=sd_dat[2]
|
||||
#set_property -dict { PACKAGE_PIN D2 IOSTANDARD LVCMOS33 } [get_ports { SD_DAT[3] }]; #IO_L14N_T2_SRCC_35 Sch=sd_dat[3]
|
||||
|
||||
##Accelerometer
|
||||
#set_property -dict { PACKAGE_PIN E15 IOSTANDARD LVCMOS33 } [get_ports { ACL_MISO }]; #IO_L11P_T1_SRCC_15 Sch=acl_miso
|
||||
#set_property -dict { PACKAGE_PIN F14 IOSTANDARD LVCMOS33 } [get_ports { ACL_MOSI }]; #IO_L5N_T0_AD9N_15 Sch=acl_mosi
|
||||
#set_property -dict { PACKAGE_PIN F15 IOSTANDARD LVCMOS33 } [get_ports { ACL_SCLK }]; #IO_L14P_T2_SRCC_15 Sch=acl_sclk
|
||||
#set_property -dict { PACKAGE_PIN D15 IOSTANDARD LVCMOS33 } [get_ports { ACL_CSN }]; #IO_L12P_T1_MRCC_15 Sch=acl_csn
|
||||
#set_property -dict { PACKAGE_PIN B13 IOSTANDARD LVCMOS33 } [get_ports { ACL_INT[1] }]; #IO_L2P_T0_AD8P_15 Sch=acl_int[1]
|
||||
#set_property -dict { PACKAGE_PIN C16 IOSTANDARD LVCMOS33 } [get_ports { ACL_INT[2] }]; #IO_L20P_T3_A20_15 Sch=acl_int[2]
|
||||
|
||||
##Temperature Sensor
|
||||
#set_property -dict { PACKAGE_PIN C14 IOSTANDARD LVCMOS33 } [get_ports { TMP_SCL }]; #IO_L1N_T0_AD0N_15 Sch=tmp_scl
|
||||
#set_property -dict { PACKAGE_PIN C15 IOSTANDARD LVCMOS33 } [get_ports { TMP_SDA }]; #IO_L12N_T1_MRCC_15 Sch=tmp_sda
|
||||
#set_property -dict { PACKAGE_PIN D13 IOSTANDARD LVCMOS33 } [get_ports { TMP_INT }]; #IO_L6N_T0_VREF_15 Sch=tmp_int
|
||||
#set_property -dict { PACKAGE_PIN B14 IOSTANDARD LVCMOS33 } [get_ports { TMP_CT }]; #IO_L2N_T0_AD8N_15 Sch=tmp_ct
|
||||
|
||||
##Omnidirectional Microphone
|
||||
#set_property -dict { PACKAGE_PIN J5 IOSTANDARD LVCMOS33 } [get_ports { M_CLK }]; #IO_25_35 Sch=m_clk
|
||||
#set_property -dict { PACKAGE_PIN H5 IOSTANDARD LVCMOS33 } [get_ports { M_DATA }]; #IO_L24N_T3_35 Sch=m_data
|
||||
#set_property -dict { PACKAGE_PIN F5 IOSTANDARD LVCMOS33 } [get_ports { M_LRSEL }]; #IO_0_35 Sch=m_lrsel
|
||||
|
||||
##PWM Audio Amplifier
|
||||
#set_property -dict { PACKAGE_PIN A11 IOSTANDARD LVCMOS33 } [get_ports { AUD_PWM }]; #IO_L4N_T0_15 Sch=aud_pwm
|
||||
#set_property -dict { PACKAGE_PIN D12 IOSTANDARD LVCMOS33 } [get_ports { AUD_SD }]; #IO_L6P_T0_15 Sch=aud_sd
|
||||
|
||||
##USB-RS232 Interface
|
||||
#set_property -dict { PACKAGE_PIN C4 IOSTANDARD LVCMOS33 } [get_ports { UART_TXD_IN }]; #IO_L7P_T1_AD6P_35 Sch=uart_txd_in
|
||||
#set_property -dict { PACKAGE_PIN D4 IOSTANDARD LVCMOS33 } [get_ports { UART_RXD_OUT }]; #IO_L11N_T1_SRCC_35 Sch=uart_rxd_out
|
||||
#set_property -dict { PACKAGE_PIN D3 IOSTANDARD LVCMOS33 } [get_ports { UART_CTS }]; #IO_L12N_T1_MRCC_35 Sch=uart_cts
|
||||
#set_property -dict { PACKAGE_PIN E5 IOSTANDARD LVCMOS33 } [get_ports { UART_RTS }]; #IO_L5N_T0_AD13N_35 Sch=uart_rts
|
||||
|
||||
##USB HID (PS/2)
|
||||
#set_property -dict { PACKAGE_PIN F4 IOSTANDARD LVCMOS33 } [get_ports { PS2_CLK }]; #IO_L13P_T2_MRCC_35 Sch=ps2_clk
|
||||
#set_property -dict { PACKAGE_PIN B2 IOSTANDARD LVCMOS33 } [get_ports { PS2_DATA }]; #IO_L10N_T1_AD15N_35 Sch=ps2_data
|
||||
|
||||
##SMSC Ethernet PHY
|
||||
#set_property -dict { PACKAGE_PIN C9 IOSTANDARD LVCMOS33 } [get_ports { ETH_MDC }]; #IO_L11P_T1_SRCC_16 Sch=eth_mdc
|
||||
#set_property -dict { PACKAGE_PIN A9 IOSTANDARD LVCMOS33 } [get_ports { ETH_MDIO }]; #IO_L14N_T2_SRCC_16 Sch=eth_mdio
|
||||
#set_property -dict { PACKAGE_PIN B3 IOSTANDARD LVCMOS33 } [get_ports { ETH_RSTN }]; #IO_L10P_T1_AD15P_35 Sch=eth_rstn
|
||||
#set_property -dict { PACKAGE_PIN D9 IOSTANDARD LVCMOS33 } [get_ports { ETH_CRSDV }]; #IO_L6N_T0_VREF_16 Sch=eth_crsdv
|
||||
#set_property -dict { PACKAGE_PIN C10 IOSTANDARD LVCMOS33 } [get_ports { ETH_RXERR }]; #IO_L13N_T2_MRCC_16 Sch=eth_rxerr
|
||||
#set_property -dict { PACKAGE_PIN C11 IOSTANDARD LVCMOS33 } [get_ports { ETH_RXD[0] }]; #IO_L13P_T2_MRCC_16 Sch=eth_rxd[0]
|
||||
#set_property -dict { PACKAGE_PIN D10 IOSTANDARD LVCMOS33 } [get_ports { ETH_RXD[1] }]; #IO_L19N_T3_VREF_16 Sch=eth_rxd[1]
|
||||
#set_property -dict { PACKAGE_PIN B9 IOSTANDARD LVCMOS33 } [get_ports { ETH_TXEN }]; #IO_L11N_T1_SRCC_16 Sch=eth_txen
|
||||
#set_property -dict { PACKAGE_PIN A10 IOSTANDARD LVCMOS33 } [get_ports { ETH_TXD[0] }]; #IO_L14P_T2_SRCC_16 Sch=eth_txd[0]
|
||||
#set_property -dict { PACKAGE_PIN A8 IOSTANDARD LVCMOS33 } [get_ports { ETH_TXD[1] }]; #IO_L12N_T1_MRCC_16 Sch=eth_txd[1]
|
||||
#set_property -dict { PACKAGE_PIN D5 IOSTANDARD LVCMOS33 } [get_ports { ETH_REFCLK }]; #IO_L11P_T1_SRCC_35 Sch=eth_refclk
|
||||
#set_property -dict { PACKAGE_PIN B8 IOSTANDARD LVCMOS33 } [get_ports { ETH_INTN }]; #IO_L12P_T1_MRCC_16 Sch=eth_intn
|
||||
|
||||
##Quad SPI Flash
|
||||
#set_property -dict { PACKAGE_PIN K17 IOSTANDARD LVCMOS33 } [get_ports { QSPI_DQ[0] }]; #IO_L1P_T0_D00_MOSI_14 Sch=qspi_dq[0]
|
||||
#set_property -dict { PACKAGE_PIN K18 IOSTANDARD LVCMOS33 } [get_ports { QSPI_DQ[1] }]; #IO_L1N_T0_D01_DIN_14 Sch=qspi_dq[1]
|
||||
#set_property -dict { PACKAGE_PIN L14 IOSTANDARD LVCMOS33 } [get_ports { QSPI_DQ[2] }]; #IO_L2P_T0_D02_14 Sch=qspi_dq[2]
|
||||
#set_property -dict { PACKAGE_PIN M14 IOSTANDARD LVCMOS33 } [get_ports { QSPI_DQ[3] }]; #IO_L2N_T0_D03_14 Sch=qspi_dq[3]
|
||||
#set_property -dict { PACKAGE_PIN L13 IOSTANDARD LVCMOS33 } [get_ports { QSPI_CSN }]; #IO_L6P_T0_FCS_B_14 Sch=qspi_csn
|
||||
334
Labs/07. Datapath/board files/nexys_riscv_unit.sv
Normal file
334
Labs/07. Datapath/board files/nexys_riscv_unit.sv
Normal file
@@ -0,0 +1,334 @@
|
||||
/* -----------------------------------------------------------------------------
|
||||
* Project Name : Architectures of Processor Systems (APS) lab work
|
||||
* Organization : National Research University of Electronic Technology (MIET)
|
||||
* Department : Institute of Microdevices and Control Systems
|
||||
* Author(s) : Alexander Kharlamov
|
||||
* Email(s) : sasha_xarlamov@org.miet.ru
|
||||
|
||||
See https://github.com/MPSU/APS/blob/master/LICENSE file for licensing details.
|
||||
* ------------------------------------------------------------------------------
|
||||
*/
|
||||
typedef enum {
|
||||
INSTR_ALU , // branch and computational
|
||||
INSTR_LI , // const load
|
||||
INSTR_IN , // periphery load
|
||||
INSTR_JUMP ,
|
||||
INSTR_NOP // ws == 3
|
||||
} Instruction_type;
|
||||
|
||||
typedef enum {
|
||||
CH_0 = 0,
|
||||
CH_1,
|
||||
CH_2,
|
||||
CH_3,
|
||||
CH_4,
|
||||
CH_5,
|
||||
CH_6,
|
||||
CH_7,
|
||||
CH_8,
|
||||
CH_9,
|
||||
CH_A,
|
||||
CH_b,
|
||||
CH_c,
|
||||
CH_d,
|
||||
CH_E,
|
||||
CH_F,
|
||||
CH_G,
|
||||
CH_L,
|
||||
CH_n,
|
||||
CH_o,
|
||||
CH_r,
|
||||
CH_S,
|
||||
CH_t,
|
||||
CH_u,
|
||||
CH_X,
|
||||
CH_P,
|
||||
CH_J,
|
||||
CH_q,
|
||||
CH_i,
|
||||
CH_m,
|
||||
CH_y,
|
||||
CH_h,
|
||||
|
||||
CH_SPACE
|
||||
} Char;
|
||||
|
||||
typedef struct {
|
||||
logic ca;
|
||||
logic cb;
|
||||
logic cc;
|
||||
logic cd;
|
||||
logic ce;
|
||||
logic cf;
|
||||
logic cg;
|
||||
logic dp;
|
||||
} Semseg;
|
||||
|
||||
module nexys_riscv_unit(
|
||||
input logic clk_i,
|
||||
input logic arstn_i,
|
||||
input logic btnd_i,
|
||||
output logic ca_o,
|
||||
output logic cb_o,
|
||||
output logic cc_o,
|
||||
output logic cd_o,
|
||||
output logic ce_o,
|
||||
output logic cf_o,
|
||||
output logic cg_o,
|
||||
output logic dp_o,
|
||||
output logic [ 7:0] an_o
|
||||
);
|
||||
|
||||
logic btnd_sync;
|
||||
sync sync (
|
||||
.clk_i ,
|
||||
.data_i (btnd_i ),
|
||||
.data_o (btnd_sync)
|
||||
);
|
||||
logic btnd_debounce;
|
||||
debounce debounce (
|
||||
.clk_i ,
|
||||
.arstn_i (1'b1 ),
|
||||
.data_i (btnd_sync ),
|
||||
.data_o (btnd_debounce)
|
||||
);
|
||||
logic bufg_clk;
|
||||
BUFG dut_bufg(
|
||||
.I (btnd_debounce),
|
||||
.O (bufg_clk )
|
||||
);
|
||||
|
||||
riscv_unit unit(
|
||||
.clk_i (bufg_clk),
|
||||
.rst_i (!arstn_i)
|
||||
);
|
||||
|
||||
logic [31:0] instr_addr;
|
||||
logic [31:0] instr;
|
||||
assign instr_addr = unit.core.instr_addr_o;
|
||||
assign instr = unit.core.instr_i;
|
||||
|
||||
import alu_opcodes_pkg::*;
|
||||
|
||||
logic illegal_instr;
|
||||
|
||||
logic [6:0] opcode;
|
||||
assign opcode = instr[6:0];
|
||||
|
||||
Char op_chars[0:3];
|
||||
import decoder_pkg::*;
|
||||
always_comb begin
|
||||
op_chars = '{4{CH_SPACE}};
|
||||
|
||||
case (opcode)
|
||||
{LOAD_OPCODE , 2'b11}: op_chars = '{CH_L, CH_o, CH_A, CH_d};
|
||||
{MISC_MEM_OPCODE, 2'b11}: op_chars = '{CH_m, CH_i, CH_S, CH_c};
|
||||
{OP_IMM_OPCODE , 2'b11}: op_chars = '{CH_o, CH_P, CH_i, CH_m};
|
||||
{AUIPC_OPCODE , 2'b11}: op_chars = '{CH_A, CH_u, CH_i, CH_P};
|
||||
{STORE_OPCODE , 2'b11}: op_chars = '{CH_S, CH_t, CH_o, CH_r};
|
||||
{OP_OPCODE , 2'b11}: op_chars[0:1] = '{CH_o, CH_P};
|
||||
{LUI_OPCODE , 2'b11}: op_chars[0:2] = '{CH_L, CH_u, CH_i};
|
||||
{BRANCH_OPCODE , 2'b11}: op_chars = '{CH_b, CH_r, CH_c, CH_h};
|
||||
{JALR_OPCODE , 2'b11}: op_chars = '{CH_J, CH_A, CH_L, CH_r};
|
||||
{JAL_OPCODE , 2'b11}: op_chars[0:2] = '{CH_J, CH_A, CH_L};
|
||||
{SYSTEM_OPCODE , 2'b11}: op_chars[0:2] = '{CH_S, CH_y, CH_S};
|
||||
|
||||
default : op_chars[0:2] = '{CH_i, CH_L, CH_L};
|
||||
endcase
|
||||
end
|
||||
|
||||
Char all_chars[0:7];
|
||||
assign all_chars[0:3] = {
|
||||
Char'(instr_addr[15:12]),
|
||||
Char'(instr_addr[11: 8]),
|
||||
Char'(instr_addr[ 7: 4]),
|
||||
Char'(instr_addr[ 3: 0])
|
||||
};
|
||||
assign all_chars[4:7] = op_chars;
|
||||
|
||||
Char current_char;
|
||||
logic [7:0] an;
|
||||
semseg_one2many #(
|
||||
.DATA_T (Char)
|
||||
) semseg_one2many (
|
||||
.clk100m_i (clk_i ),
|
||||
.arstn_i (arstn_i ),
|
||||
.all_semsegs_i (all_chars ),
|
||||
.current_semseg_o (current_char),
|
||||
.an_o (an )
|
||||
);
|
||||
|
||||
Semseg current_semseg;
|
||||
char2semseg char2semseg (
|
||||
.char_i (current_char ),
|
||||
.semseg_o (current_semseg)
|
||||
);
|
||||
|
||||
assign ca_o = current_semseg.ca;
|
||||
assign cb_o = current_semseg.cb;
|
||||
assign cc_o = current_semseg.cc;
|
||||
assign cd_o = current_semseg.cd;
|
||||
assign ce_o = current_semseg.ce;
|
||||
assign cf_o = current_semseg.cf;
|
||||
assign cg_o = current_semseg.cg;
|
||||
assign dp_o = current_semseg.dp;
|
||||
|
||||
assign an_o = an;
|
||||
|
||||
endmodule
|
||||
|
||||
module char2semseg #(
|
||||
parameter bit HEX_ONLY = 1'b0
|
||||
) (
|
||||
input Char char_i,
|
||||
output Semseg semseg_o
|
||||
);
|
||||
|
||||
localparam bit [6:0] BLANK = '1;
|
||||
|
||||
logic [6:0] semseg;
|
||||
always_comb begin
|
||||
case (char_i)
|
||||
CH_0 : semseg = ~7'h3F;
|
||||
CH_1 : semseg = ~7'h06;
|
||||
CH_2 : semseg = ~7'h5B;
|
||||
CH_3 : semseg = ~7'h4F;
|
||||
CH_4 : semseg = ~7'h66;
|
||||
CH_5 : semseg = ~7'h6D;
|
||||
CH_6 : semseg = ~7'h7D;
|
||||
CH_7 : semseg = ~7'h07;
|
||||
CH_8 : semseg = ~7'h7F;
|
||||
CH_9 : semseg = ~7'h6F;
|
||||
CH_A : semseg = ~7'h5F;
|
||||
CH_b : semseg = ~7'h7C;
|
||||
CH_c : semseg = ~7'h58;
|
||||
CH_d : semseg = ~7'h5E;
|
||||
CH_E : semseg = ~7'h79;
|
||||
CH_F : semseg = ~7'h71;
|
||||
CH_G : semseg = ~7'h3D;
|
||||
CH_L : semseg = ~7'h38;
|
||||
CH_n : semseg = ~7'h54;
|
||||
CH_o : semseg = ~7'h5C;
|
||||
CH_r : semseg = ~7'h50;
|
||||
CH_S : semseg = ~7'h64;
|
||||
CH_t : semseg = ~7'h78;
|
||||
CH_u : semseg = ~7'h1C;
|
||||
CH_X : semseg = ~7'h76;
|
||||
CH_P : semseg = ~7'h73;
|
||||
CH_J : semseg = ~7'h1E;
|
||||
CH_q : semseg = ~7'h67;
|
||||
CH_i : semseg = ~7'h30;
|
||||
CH_m : semseg = ~7'h77;
|
||||
CH_y : semseg = ~7'h6E;
|
||||
CH_h : semseg = ~7'h74;
|
||||
default : semseg = BLANK;
|
||||
endcase
|
||||
end
|
||||
|
||||
assign semseg_o.ca = semseg[0];
|
||||
assign semseg_o.cb = semseg[1];
|
||||
assign semseg_o.cc = semseg[2];
|
||||
assign semseg_o.cd = semseg[3];
|
||||
assign semseg_o.ce = semseg[4];
|
||||
assign semseg_o.cf = semseg[5];
|
||||
assign semseg_o.cg = semseg[6];
|
||||
assign semseg_o.dp = 1'b1;
|
||||
|
||||
endmodule
|
||||
|
||||
module semseg_one2many #(
|
||||
parameter int unsigned SEMSEGS_NUM = 8,
|
||||
parameter type DATA_T
|
||||
) (
|
||||
input DATA_T all_semsegs_i[0:SEMSEGS_NUM-1],
|
||||
input logic clk100m_i,
|
||||
input logic arstn_i,
|
||||
output DATA_T current_semseg_o,
|
||||
output logic [7:0] an_o
|
||||
);
|
||||
logic clk_i;
|
||||
assign clk_i = clk100m_i;
|
||||
|
||||
localparam int COUNTER_WIDTH = 10;
|
||||
logic [COUNTER_WIDTH-1:0] counter_next;
|
||||
logic [COUNTER_WIDTH-1:0] counter_ff;
|
||||
assign counter_next = counter_ff + COUNTER_WIDTH'('b1);
|
||||
always_ff @(posedge clk_i or negedge arstn_i) begin
|
||||
if (!arstn_i) counter_ff <= '0;
|
||||
else counter_ff <= counter_next;
|
||||
end
|
||||
|
||||
logic [7:0] an_ff;
|
||||
logic [7:0] an_next;
|
||||
logic an_en;
|
||||
assign an_next = {an_ff[$left(an_ff)-1:0], an_ff[$left(an_ff)]};
|
||||
assign an_en = ~|counter_ff;
|
||||
always_ff @(posedge clk_i or negedge arstn_i) begin
|
||||
if (!arstn_i) an_ff <= ~8'b1;
|
||||
else if (an_en) an_ff <= an_next;
|
||||
end
|
||||
|
||||
DATA_T current_semseg;
|
||||
always_comb begin
|
||||
unique case (1'b0)
|
||||
an_ff[0]: current_semseg = all_semsegs_i[7];
|
||||
an_ff[1]: current_semseg = all_semsegs_i[6];
|
||||
an_ff[2]: current_semseg = all_semsegs_i[5];
|
||||
an_ff[3]: current_semseg = all_semsegs_i[4];
|
||||
an_ff[4]: current_semseg = all_semsegs_i[3];
|
||||
an_ff[5]: current_semseg = all_semsegs_i[2];
|
||||
an_ff[6]: current_semseg = all_semsegs_i[1];
|
||||
an_ff[7]: current_semseg = all_semsegs_i[0];
|
||||
endcase
|
||||
end
|
||||
|
||||
assign current_semseg_o = current_semseg;
|
||||
|
||||
assign an_o = an_ff;
|
||||
|
||||
endmodule
|
||||
|
||||
module debounce #(
|
||||
parameter int unsigned MAX_COUNT = 10000
|
||||
) (
|
||||
input logic clk_i,
|
||||
input logic arstn_i,
|
||||
input logic data_i,
|
||||
output logic data_o
|
||||
);
|
||||
|
||||
localparam int COUNTER_WIDTH = $clog2(MAX_COUNT);
|
||||
logic [COUNTER_WIDTH-1:0] counter_next;
|
||||
logic [COUNTER_WIDTH-1:0] counter_ff;
|
||||
assign counter_next = (data_o != data_i) ? counter_ff - COUNTER_WIDTH'('b1) :
|
||||
COUNTER_WIDTH'(MAX_COUNT);
|
||||
always_ff @(posedge clk_i or negedge arstn_i) begin
|
||||
if (!arstn_i) counter_ff <= COUNTER_WIDTH'(MAX_COUNT);
|
||||
else counter_ff <= counter_next;
|
||||
end
|
||||
|
||||
always_ff @(posedge clk_i or negedge arstn_i) begin
|
||||
if (!arstn_i) data_o <= '0;
|
||||
else if (~|counter_ff) data_o <= data_i;
|
||||
end
|
||||
|
||||
endmodule
|
||||
|
||||
module sync #(
|
||||
parameter int unsigned SYNC_STAGES = 3
|
||||
) (
|
||||
input logic clk_i,
|
||||
input logic data_i,
|
||||
output logic data_o
|
||||
);
|
||||
|
||||
logic [SYNC_STAGES-1:0] sync_buffer_ff;
|
||||
logic [SYNC_STAGES-1:0] sync_buffer_next;
|
||||
assign sync_buffer_next = {sync_buffer_ff[$left(sync_buffer_ff)-1:0], data_i};
|
||||
always_ff @(posedge clk_i) begin
|
||||
sync_buffer_ff <= sync_buffer_next;
|
||||
end
|
||||
|
||||
assign data_o = sync_buffer_ff[$left(sync_buffer_ff)];
|
||||
|
||||
endmodule
|
||||
Reference in New Issue
Block a user