penguin86/pato-z80-home-computer
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Cleanup

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This commit is contained in:
Daniele Verducci 2025-02-09 09:14:02 +01:00
parent b667561da9
commit ec678cb3d0
1 changed files with 7 additions and 66 deletions
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73
pat80-emulator/main.c
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@ -1,12 +1,15 @@
/**
* PAT80 Emulator
*
* Emulates a PAT80.
*/
#include <Z/constants/pointer.h> /* Z_NULL */ #include <Z/constants/pointer.h> /* Z_NULL */
#include <Z80.h> #include <Z80.h>
#include <string.h> #include <string.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#define CYCLES_PER_FRAME 69888
#define CYCLES_AT_INT 24
#define CYCLES_PER_INT 32
#define ROM_SIZE 0x8000 /* 32 KiB */ #define ROM_SIZE 0x8000 /* 32 KiB */
#define MEMORY_SIZE 0xFFFF /* 64 KiB */ #define MEMORY_SIZE 0xFFFF /* 64 KiB */
@ -20,8 +23,6 @@ typedef struct {
zusize cycles; zusize cycles;
zuint8 memory[65536]; zuint8 memory[65536];
Z80 cpu; Z80 cpu;
Device* devices;
zusize device_count;
} Machine; } Machine;
@ -145,8 +146,6 @@ void machine_initialize(Machine *self) {
self->cpu.hook = Z_NULL; self->cpu.hook = Z_NULL;
self->cpu.illegal = Z_NULL; self->cpu.illegal = Z_NULL;
self->cpu.options = Z80_MODEL_ZILOG_NMOS; self->cpu.options = Z80_MODEL_ZILOG_NMOS;
/* Create and initialize devices... */
} }
@ -169,47 +168,6 @@ void machine_run(Machine *self) {
z80_run(&self->cpu, Z80_MAXIMUM_CYCLES); z80_run(&self->cpu, Z80_MAXIMUM_CYCLES);
} }
// void machine_run_frame(Machine *self)
// {
// /* CPU cycles before the INT signal */
// self->cycles += z80_execute(&self->cpu, CYCLES_AT_INT - self->cycles);
// /* CPU cycles during the INT signal */
// z80_int(&self->cpu, Z_TRUE);
// self->cycles += z80_run(&self->cpu, (CYCLES_AT_INT + CYCLES_PER_INT) - self->cycles);
// z80_int(&self->cpu, Z_FALSE);
// /* CPU cycles after the INT signal */
// self->cycles += z80_execute(&self->cpu, CYCLES_PER_FRAME - self->cycles);
// self->cycles -= CYCLES_PER_FRAME;
// }
// TEST IMPLEM DEVICE
zuint8 device_terminal_read(void *context) {
return 'H';
//return 0;
}
void device_terminal_write(void *context, zuint8 value) {
printf("%c", value);
}
zuint8 device_sound_read(void *context) {
return 0;
}
void device_sound_write(void *context, zuint8 value) {
printf("sound[%c]\n", value);
}
// TEST IMPLEM DEVICE
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
// Parse arguments // Parse arguments
if (argc < 2) { if (argc < 2) {
@ -221,7 +179,7 @@ int main(int argc, char *argv[]) {
// Setup virtual Pat80 computer // Setup virtual Pat80 computer
Z80 pat80Cpu = {}; Z80 pat80Cpu = {};
Machine pat80 = { Machine pat80 = {
/*zusize*/ .cycles = 100000, /*zusize*/ .cycles = 0,
/*Z80*/ .cpu = pat80Cpu /*Z80*/ .cpu = pat80Cpu
}; };
@ -238,23 +196,6 @@ int main(int argc, char *argv[]) {
fread(&pat80.memory,ROM_SIZE,1,romFile); // load rom from file into memory, up > fread(&pat80.memory,ROM_SIZE,1,romFile); // load rom from file into memory, up >
fclose(romFile); fclose(romFile);
// Declare system devices
Device patoTerminal = {
.read = *device_terminal_read,
.write = *device_terminal_write,
};
Device patoSound = {
.read = *device_sound_read,
.write = *device_sound_write,
};
Device patoDevices[2] = {
patoTerminal, // Port 0 (0x00 to 0x1F)
patoSound // Port 1 (0x20 to 0x3F)
};
pat80.devices = patoDevices;
pat80.device_count = 2;
machine_reset(&pat80); machine_reset(&pat80);
machine_run(&pat80); machine_run(&pat80);
} }