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Mapper30 cleanup

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This commit is contained in:
retro-wertz
2017-10-20 12:20:00 +08:00
parent ce7fe391b9
commit 7a9d85fa7b
2 changed files with 64 additions and 77 deletions
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54
src/boards/unrom512.c
View File

@@ -30,12 +30,13 @@
* Study Hall (128K PRG (in 512K flash chip), 8K CHR RAM, Horizontal Mirroring, Flash enabled)
* Although Xmas 2013 uses a different board, where LEDs can be controlled (with writes to the $8000-BFFF space),
* it otherwise functions identically.
*
* 17-10-20 - Works with Mystic Origins (Demo)
*/
#include "mapinc.h"
#include "../ines.h"
extern uint32 ROM_size;
static uint8 latche, latcheinit, bus_conflict, chrram_mask, software_id=0;
static uint16 latcha;
static uint8 *flashdata;
@@ -67,8 +68,8 @@ void setfprg16(uint32 A, uint32 V) {
V &= PRGmask16[0];
setfpageptr(16, A, flashdata ? (&flashdata[V << 14]) : 0);
} else {
uint32 VA = V << 3;
int x;
uint32 VA = V << 3;
for (x = 0; x < 8; x++)
setfpageptr(2, A + (x << 11), flashdata ? (&flashdata[((VA + x) & PRGmask2[0]) << 11]) : 0);
@@ -106,22 +107,17 @@ static DECLFW(UNROM512HLatchWrite) {
static DECLFR(UNROM512LatchRead) {
uint8 flash_id[3] = { 0xB5, 0xB6, 0xB7 };
if(software_id)
{
if (software_id) {
if (A & 1)
return flash_id[ROM_size >> 4];
else
return 0xBF;
}
if(flash_save)
{
if(A < 0xC000)
{
if (flash_save) {
if (A < 0xC000) {
if (GetFlashWriteCount(flash_bank, A))
return FlashPage[A >> 11][A];
}
else
{
} else {
if (GetFlashWriteCount(ROM_size - 1, A))
return FlashPage[A >> 11][A];
}
@@ -157,42 +153,32 @@ static void UNROM512LSync() {
int erase_d[5] = { 0xAA, 0x55, 0x80, 0xAA, 0x55 };
int erase_b[5] = { 1, 0, 1, 1, 0 };
if(flash_mode==0)
{
if((latcha == erase_a[flash_state]) && (latche == erase_d[flash_state]) && (flash_bank == erase_b[flash_state]))
{
if (flash_mode==0) {
if ((latcha == erase_a[flash_state]) && (latche == erase_d[flash_state]) && (flash_bank == erase_b[flash_state])) {
flash_state++;
if(flash_state == 5)
{
if (flash_state == 5) {
flash_mode = 1;
}
}
else if ((flash_state==2)&&(latcha==0x9555)&&(latche==0xA0)&&(flash_bank==1))
{
else if ((flash_state == 2) && (latcha == 0x9555) && (latche == 0xA0) && (flash_bank == 1)) {
flash_state++;
flash_mode = 2;
}
else if ((flash_state==2)&&(latcha==0x9555)&&(latche==0x90)&&(flash_bank==1))
{
else if ((flash_state == 2) && (latcha == 0x9555) && (latche == 0x90) && (flash_bank == 1)) {
flash_state = 0;
software_id = 1;
}
else
{
} else {
if (latche == 0xF0)
software_id = 0;
flash_state = 0;
}
}
else if(flash_mode==1) /* Chip Erase or Sector Erase */
{
if(latche==0x30)
{
else if (flash_mode == 1) { /* Chip Erase or Sector Erase */
if (latche == 0x30) {
inc_flash_write_count(flash_bank,latcha);
memset(&FlashPage[(latcha & 0xF000) >> 11][latcha & 0xF000], 0xFF, 0x1000);
}
else if (latche==0x10)
{
else if (latche == 0x10) {
uint32 i;
for(i = 0; i < (ROM_size * 4); i++)
inc_flash_write_count(i >> 2,i << 12);
@@ -201,10 +187,8 @@ static void UNROM512LSync() {
flash_state = 0;
flash_mode = 0;
}
else if(flash_mode==2) /* Byte Program */
{
if(!GetFlashWriteCount(flash_bank,latcha))
{
else if (flash_mode == 2) { /* Byte Program */
if (!GetFlashWriteCount(flash_bank, latcha)) {
inc_flash_write_count(flash_bank, latcha);
memcpy(&FlashPage[(latcha & 0xF000) >> 11][latcha & 0xF000], &Page[(latcha & 0xF000) >> 11][latcha & 0xF000], 0x1000);
}

3
src/ines.h
View File

@@ -22,6 +22,9 @@
#ifndef _FCEU_INES_H
#define _FCEU_INES_H
extern uint32 ROM_size;
extern uint32 VROM_size;
typedef struct {
char ID[4]; /*NES^Z*/
uint8 ROM_size;