forked from len0rd/rockbox
Allow rockboy to run while music is playing with smaller roms. Works on players that do not use the IRAM macros. Only tested on the Gigabeat as I think that is the only player that will run rockboy well with music. Also simplified the sound and reduced the code size a bit.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13199 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun
parent
521d6a5e1f
commit
c3dcc87aa4
9 changed files with 176 additions and 176 deletions
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@ -1,8 +1,3 @@
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#include <stdio.h>
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#include <string.h>
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#include "rockmacros.h"
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#include "defs.h"
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#include "regs.h"
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@ -13,11 +8,58 @@
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#include "save.h"
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#include "sound.h"
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/* From http://www.semis.demon.co.uk/Gameboy/Gbspec.txt (4/17/2007)
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* Cartridge type:
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* 0 - ROM ONLY 12 - ROM+MBC3+RAM
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* 1 - ROM+MBC1 13 - ROM+MBC3+RAM+BATT
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* 2 - ROM+MBC1+RAM 19 - ROM+MBC5
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* 3 - ROM+MBC1+RAM+BATT 1A - ROM+MBC5+RAM
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* 5 - ROM+MBC2 1B - ROM+MBC5+RAM+BATT
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* 6 - ROM+MBC2+BATTERY 1C - ROM+MBC5+RUMBLE
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* 8 - ROM+RAM 1D - ROM+MBC5+RUMBLE+SRAM
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* 9 - ROM+RAM+BATTERY 1E - ROM+MBC5+RUMBLE+SRAM+BATT
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* B - ROM+MMM01 1F - Pocket Camera
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* C - ROM+MMM01+SRAM FD - Bandai TAMA5
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* D - ROM+MMM01+SRAM+BATT FE - Hudson HuC-3
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* F - ROM+MBC3+TIMER+BATT FF - Hudson HuC-1
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* 10 - ROM+MBC3+TIMER+RAM+BATT
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* 11 - ROM+MBC3
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*/
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static int mbc_table[256] =
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{
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0, 1, 1, 1, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 3,
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3, 3, 3, 3, 0, 0, 0, 0, 0, 5, 5, 5, MBC_RUMBLE, MBC_RUMBLE, MBC_RUMBLE, 0,
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MBC_NONE,
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MBC_MBC1,
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MBC_MBC1,
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MBC_MBC1 | MBC_BAT,
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0,
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MBC_MBC2,
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MBC_MBC2 | MBC_BAT,
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0,
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0,
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MBC_BAT,
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0,
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0,
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0,
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MBC_BAT,
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0,
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MBC_MBC3 | MBC_BAT | MBC_RTC,
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MBC_MBC3 | MBC_BAT | MBC_RTC,
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MBC_MBC3,
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MBC_MBC3,
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MBC_MBC3 | MBC_BAT,
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0,
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0,
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0,
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0,
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0,
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MBC_MBC5,
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MBC_MBC5,
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MBC_MBC5 | MBC_BAT,
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MBC_RUMBLE,
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MBC_RUMBLE,
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MBC_RUMBLE | MBC_BAT,
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0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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@ -34,46 +76,29 @@ static int mbc_table[256] =
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, MBC_HUC3, MBC_HUC1
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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MBC_HUC3,
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MBC_HUC1
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};
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static int rtc_table[256] =
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static unsigned short romsize_table[56] =
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
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1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0
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2, 4, 8, 16, 32, 64, 128, 256,
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512, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 128, 128, 128, 0
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/* 0, 0, 0, 0, 72, 80, 96 -- actual values but bad to use these! */
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};
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static int batt_table[256] =
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/* Ram size should be no larger then 16 banks 1Mbit */
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static unsigned char ramsize_table[5] =
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{
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0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0,
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1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0,
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0
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0, 1, 1, 4, 16
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};
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static int romsize_table[256] =
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{
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2, 4, 8, 16, 32, 64, 128, 256, 512,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 128, 128, 128
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/* 0, 0, 72, 80, 96 -- actual values but bad to use these! */
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};
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static int ramsize_table[256] =
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{
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1, 1, 1, 4, 16,
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4 /* FIXME - what value should this be?! */
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};
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static char *romfile;
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static char sramfile[500];
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static char rtcfile[500];
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@ -100,24 +125,23 @@ static void initmem(void *mem, int size)
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static byte *loadfile(int fd, int *len)
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{
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int c, l = 0, p = 0;
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byte *d, buf[512];
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d=malloc(32768);
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for(;;)
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int c;
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byte *d;
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*len=lseek(fd,0,SEEK_END);
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d=malloc((*len)*sizeof(char)+64);
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if(d==0)
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{
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c = read(fd, buf, sizeof buf);
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if (c <= 0) break;
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l += c;
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memcpy(d+p, buf, c);
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p += c;
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die("Not enough memory");
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return 0;
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}
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setmallocpos(d+p+64);
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*len = l;
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lseek(fd,0,SEEK_SET);
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c = read(fd, d, *len);
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return d;
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}
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int rom_load(void)
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{
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int fd;
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@ -126,13 +150,19 @@ int rom_load(void)
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fd = open(romfile, O_RDONLY);
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if (fd<0) {
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die("cannot open rom file");
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die(romfile);
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if (fd<0)
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{
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die("cannot open rom file %s", romfile);
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return 1;
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}
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data = loadfile(fd, &len);
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close(fd);
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if(data==0)
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{
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die("Not Enough Memory");
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return 1;
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}
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header = data; /* no zip. = decompress(data, &len); */
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memcpy(rom.name, header+0x0134, 16);
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@ -141,17 +171,22 @@ int rom_load(void)
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rom.name[16] = 0;
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c = header[0x0147];
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mbc.type = mbc_table[c];
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mbc.batt = (batt_table[c] && !nobatt) || forcebatt;
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rtc.batt = rtc_table[c];
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mbc.romsize = romsize_table[header[0x0148]];
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mbc.ramsize = ramsize_table[header[0x0149]];
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mbc.type = mbc_table[c]&(MBC_MBC1|MBC_MBC2|MBC_MBC3|MBC_MBC5|MBC_RUMBLE|MBC_HUC1|MBC_HUC3);
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mbc.batt = ((mbc_table[c]&MBC_BAT) && !nobatt) || forcebatt;
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rtc.batt = mbc_table[c]&MBC_RTC;
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if (!mbc.romsize) {
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if(header[0x0148]<10 || (header[0x0148]>51 && header[0x0148]<55))
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mbc.romsize = romsize_table[header[0x0148]];
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else
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{
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die("unknown ROM size %02X\n", header[0x0148]);
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return 1;
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}
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if (!mbc.ramsize) {
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if(header[0x0149]<5)
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mbc.ramsize = ramsize_table[header[0x0149]];
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else
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{
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die("unknown SRAM size %02X\n", header[0x0149]);
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return 1;
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}
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@ -160,7 +195,17 @@ int rom_load(void)
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rom.bank = (void *) data; /* realloc(data, rlen); */
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if (rlen > len) memset(rom.bank[0]+len, 0xff, rlen - len);
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/* This is the size of the ram on the cartridge
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* See http://www.semis.demon.co.uk/Gameboy/Gbspec.txt
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* for a full description. (8192*number of banks)
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*/
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ram.sbank = malloc(8192 * mbc.ramsize);
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if(ram.sbank==0 && mbc.ramsize!=0)
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{
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die("Not enough Memory");
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return 1;
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}
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/* ram.ibank = malloc(4096*8); */
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initmem(ram.sbank, 8192 * mbc.ramsize);
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@ -171,8 +216,6 @@ int rom_load(void)
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c = header[0x0143];
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hw.cgb = ((c == 0x80) || (c == 0xc0)) && !forcedmg;
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close(fd);
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return 0;
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}
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