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Starting a rewrite of how the IO works.

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Currently 100% broken, also going to change how devices are selected
for each system so no more if/else everywhere and system should be more accurate.
This commit is contained in:
Godzil
2021-12-20 15:43:04 +00:00
parent 8fa2ef06ab
commit 6f56a8efda
33 changed files with 1017 additions and 699 deletions
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42
source/includes/gpu.h Normal file
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/*******************************************************************************
* NewOswan
* gpu.h:
* Based on the original Oswan-unix
* Copyright (c) 2014-2021 986-Studio. All rights reserved.
*
******************************************************************************/
#ifndef __GPU_H__
#define __GPU_H__
#include <stdint.h>
struct ws_gpu_t
{
uint8_t scanline;
uint32_t cyclecount;
};
extern uint8_t ws_gpu_scanline;
extern uint8_t ws_gpu_operatingInColor;
extern uint8_t ws_videoMode;
extern int16_t ws_palette[16 * 4];
extern int8_t ws_paletteColors[8];
extern int16_t wsc_palette[16 * 16];
extern unsigned int ws_gpu_unknownPort;
extern uint32_t vblank_count;
void ws_gpu_init(void);
void ws_gpu_done(void);
void ws_gpu_reset(void);
void ws_gpu_renderScanline(int16_t *framebuffer);
void ws_gpu_changeVideoMode(uint8_t value);
void ws_gpu_write_byte(uint32_t offset, uint8_t value);
int ws_gpu_port_write(uint32_t port, uint8_t value);
uint8_t ws_gpu_port_read(uint8_t port);
void ws_gpu_changeVideoMode(uint8_t value);
void ws_gpu_clearCache(void);
#endif