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cleanup

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This commit is contained in:
Michael Steil 2010-09-23 07:45:42 +00:00
parent 134aeb7d51
commit 5404b65b21
2 changed files with 64 additions and 84 deletions
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144
perfect6502.c
View File

@ -599,70 +599,34 @@ halfStep()
/************************************************************
*
* Initialization
* Interface to OS Library Code / Monitor
*
************************************************************/
void
initChip()
init_monitor()
{
nodenum_t nn;
for (nn = 0; nn < NODES; nn++)
nodes_state[nn] = STATE_FL;
nodes_state[ngnd] = STATE_GND;
nodes_state[npwr] = STATE_VCC;
transnum_t tn;
for (tn = 0; tn < TRANSISTORS; tn++)
set_transistors_on(tn, NO);
setLow(res);
setLow(clk0);
setHigh(rdy);
setLow(so);
setHigh(irq);
setHigh(nmi);
recalcAllNodes();
#if 0
var string = '';
for (var i in nodes) {
string += ' '+nodes[i].pullup;
FILE *f;
f = fopen("cbmbasic.bin", "r");
fread(memory + 0xA000, 1, 17591, f);
fclose(f);
for (uint16_t addr = 0xFF90; addr < 0xFFF3; addr += 3) {
memory[addr+0] = 0x4C;
memory[addr+1] = 0x00;
memory[addr+2] = 0xF8;
}
console.log(string);
string = '';
for (var i in transistors) {
string += ' '+transistors_on[i];
}
console.log(string);
#endif
memory[0xf000] = 0x20;
memory[0xf001] = 0x94;
memory[0xf002] = 0xE3;
#if 1
int i;
for (i = 0; i < 8; i++) {
setHigh(clk0);
setLow(clk0);
}
#endif
setHigh(res);
#if 0
for (i = 0; i < 18; i++)
halfStep();
#endif
cycle = 0;
// chipStatus();
memory[0xfffc] = 0x00;
memory[0xfffd] = 0xF0;
}
void
step()
handle_monitor()
{
#ifdef DEBUG
printf("%s\n", __func__);
#endif
halfStep();
cycle++;
if (verbose)
chipStatus();
PC = readPC();
if (PC >= 0xFF90 && ((PC - 0xFF90) % 3 == 0) && isNodeHigh(clk0)) {
A = readA();
@ -704,6 +668,49 @@ step()
}
}
/************************************************************
*
* Initialization
*
************************************************************/
void
initChip()
{
for (nodenum_t nn = 0; nn < NODES; nn++)
nodes_state[nn] = STATE_FL;
nodes_state[ngnd] = STATE_GND;
nodes_state[npwr] = STATE_VCC;
for (transnum_t tn = 0; tn < TRANSISTORS; tn++)
set_transistors_on(tn, NO);
setLow(res);
setLow(clk0);
setHigh(rdy);
setLow(so);
setHigh(irq);
setHigh(nmi);
recalcAllNodes();
/* hold RESET for 8 cycles to finish executing instruction */
for (int i = 0; i < 16; i++)
setNode(clk0, !(i & 1));
setHigh(res);
cycle = 0;
}
void
step()
{
halfStep();
cycle++;
if (verbose)
chipStatus();
handle_monitor();
}
void
steps()
{
@ -714,41 +721,14 @@ steps()
step();
}
void
go(n)
{
#ifdef DEBUG
printf("%s\n", __func__);
#endif
FILE *f;
f = fopen("cbmbasic.bin", "r");
fread(memory + 0xA000, 1, 17591, f);
fclose(f);
// memset(memory + 0xFF90, 0x60, 0x70);
int addr;
for (addr = 0xFF90; addr < 0xFFF3; addr += 3) {
memory[addr+0] = 0x4C;
memory[addr+1] = 0x00;
memory[addr+2] = 0xF8;
}
memory[0xf000] = 0x20;
memory[0xf001] = 0x94;
memory[0xf002] = 0xE3;
memory[0xfffc] = 0x00;
memory[0xfffd] = 0xF0;
steps();
}
void
setup()
{
setupNodesAndTransistors();
initChip();
go();
init_monitor();
steps();
}
int

2
runtime.c
View File

@ -399,7 +399,7 @@ CHRIN() {
/* CHROUT */
static void
CHROUT() {
exit(1);
//exit(1);
#if 0
int a = *(unsigned short*)(&RAM[0x0100+S+1]) + 1;
int b = *(unsigned short*)(&RAM[0x0100+S+3]) + 1;