view test_int_timing.c @ 1925:039553703c20

Don't apply address and cd register changes to the 'live' registers until pending flag is cleared, but do preserve the upper address bits in the latch. Fixes regression in Overdrive 2 while preserving fix to Mona in 344 bytes
author Michael Pavone <pavone@retrodev.com>
date Mon, 13 Apr 2020 20:43:25 -0700
parents aa6e0914dcd7
children
line wrap: on
line source

/*
 Copyright 2017 Michael Pavone
 This file is part of BlastEm.
 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
*/
#include <stdio.h>
#include "vdp.h"

int headless = 1;

uint32_t render_map_color(uint8_t r, uint8_t g, uint8_t b)
{
	return 0;
}

uint16_t read_dma_value(uint32_t address)
{
	return 0;
}

uint32_t *render_get_framebuffer(uint8_t which, int *pitch)
{
	*pitch = 0;
	return NULL;
}

void render_framebuffer_updated(uint8_t which, int width)
{
}

void warning(char *format, ...)
{
}


int main(int argc, char **argv)
{
	vdp_context context;
	int ret = 0;
	init_vdp_context(&context, 0);
	vdp_control_port_write(&context, 0x8000 | BIT_PAL_SEL);
	vdp_control_port_write(&context, 0x8100 | BIT_DISP_EN | BIT_VINT_EN | BIT_MODE_5);
	puts("Testing H32 Mode");
	while (!(context.flags2 & FLAG2_VINT_PENDING))
	{
		vdp_run_context(&context, context.cycles + 1);
	}
	vdp_int_ack(&context);
	uint32_t vint_cycle = vdp_next_vint(&context);
	while (!(context.flags2 & FLAG2_VINT_PENDING))
	{
		vdp_run_context(&context, context.cycles + 1);
		uint32_t vint_cycle2 = vdp_next_vint(&context);
		if (vint_cycle2 != vint_cycle) {
			printf("VINT Cycle changed from %d to %d @ line %d, slot %d\n", vint_cycle, vint_cycle2, context.vcounter, context.hslot);;
			ret = 1;
			vint_cycle = vint_cycle2;
		}
	}
	vdp_int_ack(&context);
	puts("Testing H40 Mode");
	vdp_control_port_write(&context, 0x8C81);
	while (!(context.flags2 & FLAG2_VINT_PENDING))
	{
		vdp_run_context(&context, context.cycles + 1);
	}
	vdp_int_ack(&context);
	vint_cycle = vdp_next_vint(&context);
	while (!(context.flags2 & FLAG2_VINT_PENDING))
	{
		vdp_run_context(&context, context.cycles + 1);
		uint32_t vint_cycle2 = vdp_next_vint(&context);
		if (vint_cycle2 != vint_cycle) {
			printf("VINT Cycle changed from %d to %d @ line %d, slot %d\n", vint_cycle, vint_cycle2, context.vcounter, context.hslot);;
			ret = 1;
			vint_cycle = vint_cycle2;
		}
	}
	vdp_int_ack(&context);
	puts("Testing Mode 4");
	vdp_control_port_write(&context, 0x8C00);
	vdp_control_port_write(&context, 0x8100 | BIT_DISP_EN | BIT_VINT_EN);
	while (!(context.flags2 & FLAG2_VINT_PENDING))
	{
		vdp_run_context(&context, context.cycles + 1);
	}
	context.flags2 &= ~FLAG2_VINT_PENDING;
	vint_cycle = vdp_next_vint(&context);
	while (!(context.flags2 & FLAG2_VINT_PENDING))
	{
		vdp_run_context(&context, context.cycles + 1);
		uint32_t vint_cycle2 = vdp_next_vint(&context);
		if (vint_cycle2 != vint_cycle) {
			printf("VINT Cycle changed from %d to %d @ line %d, slot %d\n", vint_cycle, vint_cycle2, context.vcounter, context.hslot);;
			ret = 1;
			vint_cycle = vint_cycle2;
		}
	}
	printf("Result: %s\n", ret ? "failure" : "success");
	return ret;
}