view test_int_timing.c @ 1348:040c5600e2d9

Implemented slow rise time of IO pins set as inputs, but not driven by device. Fixes input in Decap Attack and possibly other games with buggy controller code
author Michael Pavone <pavone@retrodev.com>
date Mon, 08 May 2017 22:31:28 -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;
}