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-- User Configuration ---------------------------------------------------------------------
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-- User Configuration ---------------------------------------------------------------------
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-- -------------------------------------------------------------------------------------------
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-- -------------------------------------------------------------------------------------------
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-- general --
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-- general --
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constant ext_imem_c : boolean := false; -- false: use and boot from proc-internal IMEM, true: use and boot from external (initialized) simulated IMEM (ext. mem A)
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constant ext_imem_c : boolean := false; -- false: use and boot from proc-internal IMEM, true: use and boot from external (initialized) simulated IMEM (ext. mem A)
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constant ext_dmem_c : boolean := false; -- false: use proc-internal DMEM, true: use external simulated DMEM (ext. mem B)
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constant ext_dmem_c : boolean := false; -- false: use proc-internal DMEM, true: use external simulated DMEM (ext. mem B)
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constant icache_use_c : boolean := false; -- set true to use processor-internal instruction cache
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constant imem_size_c : natural := 16*1024; -- size in bytes of processor-internal IMEM / external mem A
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constant imem_size_c : natural := 16*1024; -- size in bytes of processor-internal IMEM / external mem A
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constant dmem_size_c : natural := 8*1024; -- size in bytes of processor-internal DMEM / external mem B
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constant dmem_size_c : natural := 8*1024; -- size in bytes of processor-internal DMEM / external mem B
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constant f_clock_c : natural := 100000000; -- main clock in Hz
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constant f_clock_c : natural := 100000000; -- main clock in Hz
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constant baud_rate_c : natural := 19200; -- simulation UART output baudrate
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constant baud_rate_c : natural := 19200; -- simulation UART output baudrate
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-- simulated external Wishbone memory A (can be used as external IMEM) --
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-- simulated external Wishbone memory A (can be used as external IMEM) --
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MEM_INT_IMEM_SIZE => imem_size_c, -- size of processor-internal instruction memory in bytes
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MEM_INT_IMEM_SIZE => imem_size_c, -- size of processor-internal instruction memory in bytes
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MEM_INT_IMEM_ROM => false, -- implement processor-internal instruction memory as ROM
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MEM_INT_IMEM_ROM => false, -- implement processor-internal instruction memory as ROM
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-- Internal Data memory --
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-- Internal Data memory --
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MEM_INT_DMEM_USE => int_dmem_c, -- implement processor-internal data memory
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MEM_INT_DMEM_USE => int_dmem_c, -- implement processor-internal data memory
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MEM_INT_DMEM_SIZE => dmem_size_c, -- size of processor-internal data memory in bytes
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MEM_INT_DMEM_SIZE => dmem_size_c, -- size of processor-internal data memory in bytes
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-- Internal Cache memory --
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ICACHE_USE => icache_use_c, -- implement instruction cache
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ICACHE_NUM_BLOCKS => 8, -- i-cache: number of blocks (min 2), has to be a power of 2
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ICACHE_BLOCK_SIZE => 64, -- i-cache: block size in bytes (min 4), has to be a power of 2
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-- External memory interface --
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-- External memory interface --
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MEM_EXT_USE => true, -- implement external memory bus interface?
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MEM_EXT_USE => true, -- implement external memory bus interface?
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-- Processor peripherals --
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-- Processor peripherals --
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IO_GPIO_USE => true, -- implement general purpose input/output port unit (GPIO)?
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IO_GPIO_USE => true, -- implement general purpose input/output port unit (GPIO)?
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IO_MTIME_USE => true, -- implement machine system timer (MTIME)?
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IO_MTIME_USE => true, -- implement machine system timer (MTIME)?
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