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sim_main.cpp
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#include "Vsaturn_dsp.h"
#include "verilated.h"
#include "vga_out.h"
#if VM_TRACE
#include "verilated_vcd_c.h"
#endif
unsigned int rom_size = 256; // 256 Words (32-bit wide).
uint32_t *rom_ptr = (uint32_t *) malloc(rom_size);
unsigned int ram_size = 256; // 256 Words (32-bit wide).
uint32_t *ram_ptr = (uint32_t *) malloc(ram_size);
unsigned int file_size;
int main_time = 0;
int hcount = 0;
int vcount = 0;
int main(int argc, char **argv, char **env)
{
// Half cycles
vluint64_t hcycle = 0;
vluint8_t hclkcnt = 0;
// VGA output
int vga_clk;
int vga_hs;
int vga_vs;
int vga_r;
int vga_g;
int vga_b;
uint32_t ram_addr = 0;
uint32_t byte_swap;
Verilated::commandArgs(argc, argv);
// Init top verilog instance
Vsaturn_dsp* top = new Vsaturn_dsp;
// Init VGA output C++ model
// VgaOut* vga = new VgaOut(1, 24, HS_POS_POL|VS_POS_POL, 0, 2000, 0, 1000, "snapshot");
VgaOut* vga = new VgaOut(0, 24, 1, 0, 1280, 0, 720, "snapshot");
FILE *romfile;
romfile = fopen("sonicr_intro_dsp.bin","r");
if (romfile!=NULL) {
printf("\nDSP Program RAM file loaded OK.\n");
}
else {
printf("\nDSP Program RAM file not found!\n");
return 0;
};
fseek(romfile, 0L, SEEK_END);
file_size = ftell(romfile);
fseek(romfile, 0L, SEEK_SET);
fread(rom_ptr, 1, file_size, romfile); // Read the whole PROGRAM ROM file into RAM.
FILE *ramfile;
ramfile = fopen("sonicr_intro_dsp_dataram.bin","r");
if (ramfile!=NULL) {
printf("\nDSP Data RAM file loaded OK.\n\n");
}
else {
printf("\nDSP Data RAM file not found!\n\n");
return 0;
};
fseek(ramfile, 0L, SEEK_END);
file_size = ftell(ramfile);
fseek(ramfile, 0L, SEEK_SET);
fread(ram_ptr, 1, file_size, ramfile); // Read the whole DATA RAM file into RAM.
//while (!Verilated::gotFinish()) {
while ( main_time < 1024 ) { // Only run for a short time.
if (main_time < 8) {
top->RESET_N = 0; // Assert reset
top->EXEC = 0; // Halt the DSP, until we've loaded the data into the Data RAMs...
}
if (main_time == 20) {
top->RESET_N = 1; // Deassert reset
}
if (ram_addr<256) {
if ((main_time & 1) == 0) {
byte_swap = (ram_ptr[ram_addr]&0xFF000000)>>24 |
(ram_ptr[ram_addr]&0x00FF0000)>>8 |
(ram_ptr[ram_addr]&0x0000FF00)<<8 |
(ram_ptr[ram_addr]&0x000000FF)<<24;
top->D0_ADDR = ram_addr;
top->D0_BUS_IN = byte_swap;
top->D0_WRITE = 1;
printf("D0_ADDR: 0x%02x D0_BUS_IN: 0x%08x\n", top->D0_ADDR, top->D0_BUS_IN);
ram_addr++;
}
}
else {
top->D0_WRITE = 0; // Stop the writes.
top->EXEC = 1; // Start the DSP instruction decoding!
}
if ((main_time & 1) == 1) {
top->CLOCK = 1;
//top->pix_clk = 1; // Toggle clock
//top->sys_clk = 1;
}
if ((main_time & 1) == 0) {
top->CLOCK = 0;
//top->pix_clk = 0;
//top->sys_clk = 0;
if (top->INST_ADDR < rom_size) {
byte_swap = (rom_ptr[top->INST_ADDR]&0xFF000000)>>24 |
(rom_ptr[top->INST_ADDR]&0x00FF0000)>>8 |
(rom_ptr[top->INST_ADDR]&0x0000FF00)<<8 |
(rom_ptr[top->INST_ADDR]&0x000000FF)<<24;
top->INST_IN = byte_swap;
}
printf("ADDR: %08x ", top->INST_ADDR-1);
printf("FETCH: %08x ", top->FETCH);
// Operational Instruction...
if ( (top->FETCH&0xC0000000)>>28 == 0x0 ) { // Bug fixed. Only need to check the upper two bits of FETCH for this.
uint16_t alu_op = ((top->FETCH&0x3C000000)>>26)&0xF;
uint16_t xbus_op = ((top->FETCH&0x03F00000)>>20)&0x3F;
uint16_t ybus_op = ((top->FETCH&0x000FC000)>>14)&0x3F;
uint16_t d1bus_op = ((top->FETCH&0x00003FFF)>>0)&0x3FFF;
printf("ALU_OP: %02x ", alu_op);
printf("XBUS_OP: %02x ", xbus_op);
printf("YBUS_OP: %02x ", ybus_op);
printf("D1_OP: %04x ", d1bus_op);
printf("\n");
printf("P_REG: %012x ", top->P_REG);
printf("A_REG: %012x ", top->A_REG);
switch ( (top->FETCH&0x3C000000)>>26 ) {
case 0x0: printf("NOP "); break;
case 0x1: printf("AND "); break;
case 0x2: printf("OR "); break;
case 0x3: printf("XOR "); break;
case 0x4: printf("ADD "); break;
case 0x5: printf("SUB "); break;
case 0x6: printf("AD2 "); break;
case 0x7: break;
case 0x8: printf("SR "); break;
case 0x9: printf("RR "); break;
case 0xA: printf("SL "); break;
case 0xB: printf("RL "); break;
case 0xC: break;
case 0xD: break;
case 0xE: break;
case 0xF: printf("RL8 "); break;
}
// Handle X-Bus instructions...
if ( ((top->FETCH&0x2000000)>>25)==1 ) {// If bit 25 of FETCH is set. (can be combined with an instruction below.)
switch (xbus_op&0x7) {
case 0x0: printf("MOV M0,X "); break;
case 0x1: printf("MOV M1,X "); break;
case 0x2: printf("MOV M2,X "); break;
case 0x3: printf("MOV M3,X "); break;
case 0x4: printf("MOV MC0,X "); break;
case 0x5: printf("MOV MC1,X "); break;
case 0x6: printf("MOV MC2,X "); break;
case 0x7: printf("MOV MC3,X "); break;
}
}
switch ( (top->FETCH&0x1800000)>>23 ) { // Bits 24:23 of FETCH.
case 0: break;
case 1: break;
case 2: printf("MOV MUL,P "); break;
case 3: {
switch (xbus_op&0x7) {
case 0x0: printf("MOV M0,P "); break;
case 0x1: printf("MOV M1,P "); break;
case 0x2: printf("MOV M2,P "); break;
case 0x3: printf("MOV M3,P "); break;
case 0x4: printf("MOV MC0,P "); break;
case 0x5: printf("MOV MC1,P "); break;
case 0x6: printf("MOV MC2,P "); break;
case 0x7: printf("MOV MC3,P "); break;
}
}
}
if ( ((top->FETCH&0x3800000)>>23)==0 ) {// If bits 25:23 of FETCH are low.
printf("NOP ");
}
// Handle Y-Bus instructions...
if ( ((top->FETCH&0x80000)>>19)==1 ) { // If bit 19 of FETCH is set. (can be combined with an instruction below.)
switch (ybus_op&0x7) {
case 0x0: printf("MOV M0,Y "); break;
case 0x1: printf("MOV M1,Y "); break;
case 0x2: printf("MOV M2,Y "); break;
case 0x3: printf("MOV M3,Y "); break;
case 0x4: printf("MOV MC0,Y "); break;
case 0x5: printf("MOV MC1,Y "); break;
case 0x6: printf("MOV MC2,Y "); break;
case 0x7: printf("MOV MC3,Y "); break;
}
}
switch ((top->FETCH&0x60000)>>17) { // Bits 18:17 of FETCH.
case 0: break;
case 1: printf("CLR A "); break;
case 2: printf("MOV ALU,A "); break;
case 3: {
switch (ybus_op&0x7) {
case 0x0: printf("MOV M0,A "); break;
case 0x1: printf("MOV M1,A "); break;
case 0x2: printf("MOV M2,A "); break;
case 0x3: printf("MOV M3,A "); break;
case 0x4: printf("MOV MC0,A "); break;
case 0x5: printf("MOV MC1,A "); break;
case 0x6: printf("MOV MC2,A "); break;
case 0x7: printf("MOV MC3,A "); break;
}
}
}
if ( ((top->FETCH&0xE0000)>>17)==0 ) { // If bits 19:17 of FETCH are low.
printf("NOP ");
}
switch ( (d1bus_op&0x3000)>>12) {
case 0x0: printf("NOP "); break;
case 0x1: {
printf("MOV #$%02x,", d1bus_op&0xFF); // Grab the Immediate value from d1bus_op, bits 7:0.
switch ( (d1bus_op&0xF00)>>8 ) {
case 0x0: printf("MC0 "); break;
case 0x1: printf("MC1 "); break;
case 0x2: printf("MC2 "); break;
case 0x3: printf("MC3 "); break;
case 0x4: printf("RX "); break;
case 0x5: printf("PL "); break;
case 0x6: printf("RA0 "); break;
case 0x7: printf("WA0 "); break;
case 0x8: break;
case 0x9: break;
case 0xA: printf("LOP "); break;
case 0xB: printf("TOP "); break;
case 0xC: printf("CT0 "); break;
case 0xD: printf("CT1 "); break;
case 0xE: printf("CT2 "); break;
case 0xF: printf("CT3 "); break;
}
}
case 0x2: break;
case 0x3: {
switch ( d1bus_op&0xF ) {
// Source...
case 0x0: printf("MOV M0,"); break;
case 0x1: printf("MOV M1,"); break;
case 0x2: printf("MOV M2,"); break;
case 0x3: printf("MOV M3,"); break;
case 0x4: printf("MOV MC0,"); break;
case 0x5: printf("MOV MC1,"); break;
case 0x6: printf("MOV MC2,"); break;
case 0x7: printf("MOV MC3,"); break;
case 0x8: printf("MOV NF!,"); break;break;
case 0x9: printf("MOV ALL,"); break;
case 0xA: printf("MOV ALH,"); break;
case 0xB: break;
case 0xC: break;
case 0xD: break;
case 0xE: break;
case 0xF: break;
}
switch ( (d1bus_op&0xF00)>>8 ) {
// Destination...
case 0x0: printf("MC0 "); break;
case 0x1: printf("MC1 "); break;
case 0x2: printf("MC2 "); break;
case 0x3: printf("MC3 "); break;
case 0x4: printf("RX "); break;
case 0x5: printf("PL "); break;
case 0x6: printf("RA0 "); break;
case 0x7: printf("WA0 "); break;
case 0x8: break;
case 0x9: break;
case 0xA: printf("LOP "); break;
case 0xB: printf("TOP "); break;
case 0xC: printf("CT0 "); break;
case 0xD: printf("CT1 "); break;
case 0xE: printf("CT2 "); break;
case 0xF: printf("CT3 "); break;
}
}
default: break;
}
}// Operational Instruction printfs done.
// DMA Instruction...
if ( (top->FETCH&0xF0000000)>>28 == 0xC ) {
bool dma_format = (top->FETCH&0x00002000)>>13;
printf("DMA");
if (dma_format==0) {
printf("1: "); // DMA format 1.
uint8_t dma_add_mode = (top->FETCH&0x00038000)>>15;
uint8_t dma_data_ram = (top->FETCH&0x00000300)>>8;
printf("ADD_MODE: %d ", dma_add_mode);
printf("DATA_RAM_ADDR: %d", dma_data_ram);
}
else {
printf("2: "); // DMA format 2.
uint8_t dma_add_mode = (top->FETCH&0x00038000)>>15;
uint8_t dma_data_ram = (top->FETCH&0x00000300)>>8;
printf("ADD_MODE: %d ", dma_add_mode);
printf("DATA_RAM_ADDR: %d", dma_data_ram);
}
printf("\n");
}
// JUMP Instruction...
if ( (top->FETCH&0xF0000000)>>28 == 0xD ) {
printf("JMP ");
if ( (top->FETCH&0x03F80000)==0x03080000) printf("Z, #$");
if ( (top->FETCH&0x03F80000)==0x02080000) printf("NZ, #$");
if ( (top->FETCH&0x03F80000)==0x03100000) printf("S, #$");
if ( (top->FETCH&0x03F80000)==0x02100000) printf("NS, #$");
if ( (top->FETCH&0x03F80000)==0x03200000) printf("C, #$");
if ( (top->FETCH&0x03F80000)==0x02200000) printf("NC, #$");
if ( (top->FETCH&0x03F80000)==0x03400000) printf("T0, #$");
if ( (top->FETCH&0x03F80000)==0x02400000) printf("NT0,#$");
if ( (top->FETCH&0x03F80000)==0x03180000) printf("ZS, #$");
if ( (top->FETCH&0x03F80000)==0x02180000) printf("NZS,#$");
printf("%02x", top->FETCH&0xFF);
printf("\n");
}
// LOOP BOTTOM Command...
if ( (top->FETCH&0xF0000000)>>28 == 0xE ) {
if ( (top->FETCH&0x08000000)>>27 == 0 ) printf("BTM ");
else printf("LPS ");
printf("\n");
}
printf("\n");
// Control signals...
if (top->MD0_TO_X) printf("MD0_TO_X, ");
if (top->MD1_TO_X) printf("MD1_TO_X, ");
if (top->MD2_TO_X) printf("MD2_TO_X, ");
if (top->MD3_TO_X) printf("MD3_TO_X, ");
if (top->MD0_TO_Y) printf("MD0_TO_Y, ");
if (top->MD1_TO_Y) printf("MD1_TO_Y, ");
if (top->MD2_TO_Y) printf("MD2_TO_Y, ");
if (top->MD3_TO_Y) printf("MD3_TO_Y, ");
if (top->MD0_TO_D1) printf("MD0_TO_D1, ");
if (top->MD1_TO_D1) printf("MD1_TO_D1, ");
if (top->MD2_TO_D1) printf("MD2_TO_D1, ");
if (top->MD3_TO_D1) printf("MD3_TO_D1, ");
if (top->D1_TO_MD0) printf("D1_TO_MD0, ");
if (top->D1_TO_MD1) printf("D1_TO_MD1, ");
if (top->D1_TO_MD2) printf("D1_TO_MD2, ");
if (top->D1_TO_MD3) printf("D1_TO_MD3, ");
if (top->ACH_TO_D1) printf("ACH_TO_D1, ");
if (top->ACL_TO_D1) printf("ACL_TO_D1, ");
if (top->X_TO_RX) printf("X_TO_RX, ");
if (top->D1_TO_RX) printf("D1_TO_RX, ");
if (top->LOAD_RX) printf("LOAD_RX, ");
if (top->LOAD_RY) printf("LOAD_RY, ");
if (top->PC_TO_TOP) printf("PC_TO_TOP, ");
if (top->D1_TO_TOP) printf("D1_TO_TOP, ");
if (top->MUL_TO_P) printf("MUL_TO_P, ");
if (top->P_TO_PL) printf("P_TO_PL, ");
if (top->X_TO_PL) printf("X_TO_PL, ");
if (top->D1_TO_PL) printf("D1_TO_PL, ");
if (top->LOAD_PL) printf("LOAD_PL, ");
if (top->LOAD_PH) printf("LOAD_PH, ");
if (top->ALU_TO_A) printf("ALU_TO_A, ");
if (top->Y_TO_ACL) printf("Y_TO_ACL, ");
if (top->LOAD_ACH) printf("LOAD_ACH, ");
if (top->LOAD_ACL) printf("LOAD_ACL, ");
if (top->IMM_TO_D1) printf("IMM_TO_D1, ");
if (top->IMM_TO_LOP) printf("IMM_TO_LOP, ");
if (top->D1_TO_LOP) printf("D1_TO_LOP, ");
if (top->PC_TO_D0) printf("PC_TO_D0, ");
if (top->RA_TO_RAMS) printf("RA_TO_RAMS, ");
if (top->SHIFT_L16_TO_D1) printf("SHFT_L16_TO_D1,");
if (top->CLR_A) printf("CLR_A, ");
if (top->LOAD_CT0) printf("LOAD_CT0, ");
if (top->LOAD_CT1) printf("LOAD_CT1, ");
if (top->LOAD_CT2) printf("LOAD_CT2, ");
if (top->LOAD_CT3) printf("LOAD_CT3, ");
if (top->LOAD_MD0) printf("LOAD_MD0, ");
if (top->LOAD_MD1) printf("LOAD_MD1, ");
if (top->LOAD_MD2) printf("LOAD_MD2, ");
if (top->LOAD_MD3) printf("LOAD_MD3, ");
if (top->LOAD_RA) printf("LOAD_RA, ");
if (top->LOAD_RA0) printf("LOAD_RA0, ");
if (top->LOAD_WA0) printf("LOAD_WA0, ");
if (top->LOAD_LOP) printf("LOAD_LOP, ");
if (top->LOAD_TOP) printf("LOAD_TOP, ");
if (top->LOAD_PROG_RAM) printf("LOAD_PROG_RAM, ");
if (top->INC_CT0) printf("INC_CT0, ");
if (top->INC_CT1) printf("INC_CT1, ");
if (top->INC_CT2) printf("INC_CT2, ");
if (top->INC_CT3) printf("INC_CT3, ");
printf("\n");
printf("D1BUS: %08x ", top->D1_BUS);
printf("RA0: %08x ", top->RA0);
printf("WA0: %08x ", top->WA0);
printf("\n");
printf("MD0_DOUT: %08x MD1_DOUT: %08x MD2_DOUT: %08x MD3_DOUT: %08x\n", top->MD0_DOUT, top->MD1_DOUT, top->MD2_DOUT, top->MD3_DOUT);
printf("MD0_WREN: %d MD1_WREN: %d MD2_WREN: %d MD3_WREN: %d\n", top->MD0_WREN, top->MD1_WREN, top->MD2_WREN, top->MD3_WREN);
printf("CT0: %02x CT1: %02x CT2: %02x CT3: %02x\n", top->CT0, top->CT1, top->CT2, top->CT3);
printf("\n");
if (vga_clk==1) {
if (hcount<1648) {
hcount++;
}
else {
hcount = 0;
if (vcount<750) vcount ++;
else vcount = 0;
}
if (hcount==0) vga_hs = 1;
else vga_hs = 0;
if (vcount==0) {
vga_vs = 1;
//printf("main_time: %08d hcount: %08d vcount: %08d\n", main_time, hcount, vcount);
}
else vga_vs = 0;
}
/*
top->horbeam = hcount;
top->verbeam = vcount;
top->hsync = vga_hs;
top->vsync = vga_vs;
*/
vga_clk = top->CLOCK;
//vga_vs = top->vga_vs_n;
//vga_hs = top->vga_hs_n;
//vga_r = (top->rgb_out&0xFF0000)>>16;
//vga_g = (top->rgb_out&0x00FF00)>>8;
//vga_b = (top->rgb_out&0x0000FF)>>0;
vga->eval (hcycle / 2,
vga_clk, vga_vs, vga_hs,
vga_r, vga_g, vga_b);
hcycle++;
hclkcnt++;
//top->sys_clk = (hclkcnt & 1) == 1;
//top->pix_clk = (hclkcnt % 3) == 2;
}
top->eval(); // Evaluate model!
main_time++; // Time passes...
}
top->final();
delete top;
exit(0);
}