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vsim.cc
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vsim.cc
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <list>
#include "blocks.h"
#include "sched.h"
cstate ref;
void init(cstate &s)
{
memset(&s, 0, sizeof(s));
ref = s;
s.first = true;
s.silent = false;
}
void update(cstate &s)
{
for(;;) {
std::list<void (*)(cstate &)> f;
compute_sched(ref, s, f, s.first);
s.first = false;
ref = s;
if(f.empty())
break;
for(std::list<void (*)(cstate &)>::const_iterator i = f.begin(); i != f.end(); i++)
(*i)(s);
}
}
static unsigned char swp(unsigned char v)
{
v = ((v >> 4) & 0x0f) | ((v << 4) & 0xf0);
v = ((v >> 2) & 0x33) | ((v << 2) & 0xcc);
v = ((v >> 1) & 0x55) | ((v << 1) & 0xaa);
return v;
}
void show_state(const cstate &s)
{
static bool xphi1 = true, xphi2=true;
if(true || xphi1 != s.phi1 || xphi2 != s.phi2) {
xphi1 = s.phi1;
xphi2 = s.phi2;
printf("%02d.%06d.%d: gtsr=%d%d%d(%d) p80=%d",
int(s.ctime/720000/2), int((s.ctime/2) % 720000), int(s.ctime & 1),
s.gtsr[1], s.gtsr[3], s.gtsr[5], !s.gtsr_input,
s.pulse_80Hz);
printf(" rom=");
bool f=true;
if(!s.rom_hsel_f2) { if(!f) printf(","); printf("f2 "); f=false; }
if(!s.rom_hsel_f2q){ if(!f) printf(","); printf("f2q"); f=false; }
if(!s.rom_hsel_f3) { if(!f) printf(","); printf("f3 "); f=false; }
if(!s.rom_extra) { if(!f) printf(","); printf("xt "); f=false; }
if(!s.rom_hsel_fc) { if(!f) printf(","); printf("fc "); f=false; }
if(!s.rom_hsel_fa) { if(!f) printf(","); printf("fa "); f=false; }
if(!s.rom_hsel_va) { if(!f) printf(","); printf("va "); f=false; }
if(!s.rom_hsel_f1) { if(!f) printf(","); printf("f1 "); f=false; }
if(f)
printf(" ");
if(0)
printf(" phi1=%d phi2=%d stbsr=%d%d%d pad_stb=%d ipl_s=%d ipl_r=%d p_stb=%02x p_rom=%02x rp=%x rclvd=%x rd=%02x rcl=%d rmux=%d",
s.phi1, s.phi2,
s.stbsr[0], !s.stbsr[1], s.stbsr[2],
s.pad_stb,
s.input_phone_latch_stb, s.input_phone_latch_rom,
s.p_stb, s.p_rom,
s.rom_param, s.rom_clvd, s.rom_duration, s.rom_cl,
s.rom_muxed_fx_out
);
if(0)
printf(" sram=%02x.%02x.%02x.%02x.%02x.%02x.%02x di=%02x srew=%d clcr=%d cvr=%d clr=%d clv=%d",
swp(s.sram[0]), swp(s.sram[1]), swp(s.sram[2]), swp(s.sram[3]), swp(s.sram[4]), swp(s.sram[5]), swp(s.sram[6]),
s.driver_in,
s.sram_enable_w, s.clc_reset, s.cv_reached, s.cl_reached, s.cl_value);
if(0)
printf(" 625Hz=%d 208hz=%d",
s.tick_625hz, s.tick_208hz);
if(0)
printf(" phc=%02x.%d pht=%d phc2=%d.%x.%d clvd_d=%d",
(s.phc[17] ? 0x40 : 0) |
(s.phc[15] ? 0x20 : 0) |
(s.phc[13] ? 0x10 : 0) |
(s.phc[11] ? 0x08 : 0) |
(s.phc[ 9] ? 0x04 : 0) |
(s.phc[ 7] ? 0x02 : 0) |
(s.phc[ 5] ? 0x01 : 0),
(s.phc[ 3] ? 0x02 : 0) |
(s.phc[ 1] ? 0x01 : 0),
s.tick_ph,
s.phc2[11],
(s.phc2[9] ? 0x8 : 0) |
(s.phc2[7] ? 0x4 : 0) |
(s.phc2[5] ? 0x2 : 0) |
(s.phc2[3] ? 0x1 : 0),
s.phc2[1],
s.clvd_detect);
if(0)
printf(" add=%d%d%d c1=%d%d c2=%d%d w=%d",
!s.latch_sram_r, s.latch_sram_alt_r, !s.rom_muxed_fx_out, !s.carry1_in, !s.carry1_out, !s.carry2_in, !s.carry2_out, s.sram_w);
if(1) {
printf(" noise=");
for(int i=0; i<30; i+=2)
printf("%d", s.noise[i]);
printf(" ");
for(int i=1; i<30; i+=2)
printf("%d", s.noise[i]);
printf(" no=%d", s.noise_out);
}
printf("\n");
}
}
void step(cstate &s, bool verbose)
{
s.clk_0 = false;
update(s);
if(verbose)
show_state(s);
s.clk_0 = true;
update(s);
s.ctime++;
s.clk_1 = false;
update(s);
if(false && verbose)
show_state(s);
s.clk_1 = true;
update(s);
s.ctime++;
}
int main()
{
cstate s;
init(s);
s.pad_stb = false;
s.p_stb = s.p_rom = s.p_input = 0x3f;
s.clk_0 = s.clk_1 = true;
for(int i=0; i<1000; i++)
step(s, true);
s.p_input = 0x20;
s.pad_stb = true;
for(int i=0; i<72; i++)
step(s, true);
s.pad_stb = false;
for(int i=0; i<43; i++)
step(s, true);
for(int i=0; i<500000; i++)
step(s, true);
return 0;
}