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

1 files changed, 107 insertions, 64 deletions

diff --git a/apps/plugins/rockboy/loader.c b/apps/plugins/rockboy/loader.c
index 1317362..0dbd0b4 100644
--- a/apps/plugins/rockboy/loader.c
+++ b/apps/plugins/rockboy/loader.c
@@ -1,8 +1,3 @@
-
-#include <stdio.h>
-#include <string.h>
-
-
 #include "rockmacros.h"
 #include "defs.h"
 #include "regs.h"
@@ -13,11 +8,58 @@
 #include "save.h"
 #include "sound.h"
 
+/* From http://www.semis.demon.co.uk/Gameboy/Gbspec.txt (4/17/2007)
+ * Cartridge type:
+ *          0 - ROM ONLY                12 - ROM+MBC3+RAM
+ *          1 - ROM+MBC1                13 - ROM+MBC3+RAM+BATT
+ *          2 - ROM+MBC1+RAM            19 - ROM+MBC5
+ *          3 - ROM+MBC1+RAM+BATT       1A - ROM+MBC5+RAM
+ *          5 - ROM+MBC2                1B - ROM+MBC5+RAM+BATT
+ *          6 - ROM+MBC2+BATTERY        1C - ROM+MBC5+RUMBLE
+ *          8 - ROM+RAM                 1D - ROM+MBC5+RUMBLE+SRAM
+ *          9 - ROM+RAM+BATTERY         1E - ROM+MBC5+RUMBLE+SRAM+BATT
+ *          B - ROM+MMM01               1F - Pocket Camera
+ *          C - ROM+MMM01+SRAM          FD - Bandai TAMA5
+ *          D - ROM+MMM01+SRAM+BATT     FE - Hudson HuC-3
+ *          F - ROM+MBC3+TIMER+BATT     FF - Hudson HuC-1
+ *         10 - ROM+MBC3+TIMER+RAM+BATT
+ *         11 - ROM+MBC3
+ */
 
 static int mbc_table[256] =
 {
-    0, 1, 1, 1, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 3,
-    3, 3, 3, 3, 0, 0, 0, 0, 0, 5, 5, 5, MBC_RUMBLE, MBC_RUMBLE, MBC_RUMBLE, 0,
+    MBC_NONE,
+    MBC_MBC1,
+    MBC_MBC1,
+    MBC_MBC1 | MBC_BAT,
+    0,
+    MBC_MBC2,
+    MBC_MBC2 | MBC_BAT,
+    0,
+    0,
+    MBC_BAT,
+    0,
+    0,
+    0,
+    MBC_BAT, 
+    0, 
+    MBC_MBC3 | MBC_BAT | MBC_RTC,
+    MBC_MBC3 | MBC_BAT | MBC_RTC,
+    MBC_MBC3, 
+    MBC_MBC3, 
+    MBC_MBC3 | MBC_BAT,
+    0,
+    0, 
+    0, 
+    0, 
+    0,
+    MBC_MBC5, 
+    MBC_MBC5,
+    MBC_MBC5 | MBC_BAT, 
+    MBC_RUMBLE, 
+    MBC_RUMBLE, 
+    MBC_RUMBLE | MBC_BAT,
+    0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 
@@ -34,46 +76,29 @@ static int mbc_table[256] =
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, MBC_HUC3, MBC_HUC1
-};
-
-static int rtc_table[256] =
-{
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
-    1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0
-};
-
-static int batt_table[256] =
-{
-    0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0,
-    1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0,
-    0
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+    MBC_HUC3, 
+    MBC_HUC1
 };
 
-static int romsize_table[256] =
+static unsigned short romsize_table[56] =
 {
-    2, 4, 8, 16, 32, 64, 128, 256, 512,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 128, 128, 128
-    /* 0, 0, 72, 80, 96  -- actual values but bad to use these! */
+    2,   4,   8,  16,  32,  64, 128, 256,
+    512, 0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0, 128, 128, 128,   0
+    /* 0, 0, 0, 0, 72, 80, 96  -- actual values but bad to use these! */
 };
 
-static int ramsize_table[256] =
+/* Ram size should be no larger then 16 banks 1Mbit */
+static unsigned char ramsize_table[5] =
 {
-    1, 1, 1, 4, 16,
-    4 /* FIXME - what value should this be?! */
+    0, 1, 1, 4, 16
 };
 
-
 static char *romfile;
 static char sramfile[500];
 static char rtcfile[500];
@@ -100,24 +125,23 @@ static void initmem(void *mem, int size)
 
 static byte *loadfile(int fd, int *len)
 {
-    int c, l = 0, p = 0;
-    
-    byte *d, buf[512];
-    d=malloc(32768);
-    for(;;)
+    int c;
+    byte *d;
+
+    *len=lseek(fd,0,SEEK_END);
+    d=malloc((*len)*sizeof(char)+64);
+    if(d==0)
     {
-        c = read(fd, buf, sizeof buf);
-        if (c <= 0) break;
-        l += c;
-        memcpy(d+p, buf, c);
-        p += c;
+        die("Not enough memory");
+        return 0;
     }
-    setmallocpos(d+p+64);
-    *len = l;
+    lseek(fd,0,SEEK_SET);
+    
+    c = read(fd, d, *len);
+
     return d;
 }
 
-
 int rom_load(void)
 {
     int fd;
@@ -126,13 +150,19 @@ int rom_load(void)
 
     fd = open(romfile, O_RDONLY);
     
-    if (fd<0) {
-      die("cannot open rom file");
-      die(romfile);
+    if (fd<0)
+    {
+      die("cannot open rom file %s", romfile);
       return 1;
     }
 
     data = loadfile(fd, &len);
+    close(fd);
+    if(data==0)
+    {
+        die("Not Enough Memory");
+        return 1;
+    }
     header = data; /* no zip. = decompress(data, &len); */
     
     memcpy(rom.name, header+0x0134, 16);
@@ -141,17 +171,22 @@ int rom_load(void)
     rom.name[16] = 0;
 
     c = header[0x0147];
-    mbc.type = mbc_table[c];
-    mbc.batt = (batt_table[c] && !nobatt) || forcebatt;
-    rtc.batt = rtc_table[c];
-    mbc.romsize = romsize_table[header[0x0148]];
-    mbc.ramsize = ramsize_table[header[0x0149]];
+    mbc.type = mbc_table[c]&(MBC_MBC1|MBC_MBC2|MBC_MBC3|MBC_MBC5|MBC_RUMBLE|MBC_HUC1|MBC_HUC3);
+    mbc.batt = ((mbc_table[c]&MBC_BAT) && !nobatt) || forcebatt;
+    rtc.batt = mbc_table[c]&MBC_RTC;
 
-    if (!mbc.romsize)  { 
+    if(header[0x0148]<10 || (header[0x0148]>51 && header[0x0148]<55))
+        mbc.romsize = romsize_table[header[0x0148]];
+    else
+    {
         die("unknown ROM size %02X\n", header[0x0148]);
         return 1;
     }
-    if (!mbc.ramsize) { 
+    
+    if(header[0x0149]<5)
+        mbc.ramsize = ramsize_table[header[0x0149]];
+    else
+    {
         die("unknown SRAM size %02X\n", header[0x0149]);
         return 1;
     }
@@ -160,7 +195,17 @@ int rom_load(void)
     rom.bank = (void *) data; /* realloc(data, rlen); */
     if (rlen > len) memset(rom.bank[0]+len, 0xff, rlen - len);
 
+    /* This is the size of the ram on the cartridge
+     * See http://www.semis.demon.co.uk/Gameboy/Gbspec.txt
+     * for a full description. (8192*number of banks)
+     */
     ram.sbank = malloc(8192 * mbc.ramsize);
+    if(ram.sbank==0 && mbc.ramsize!=0)
+    {
+        die("Not enough Memory");
+        return 1;
+    }
+
     /* ram.ibank = malloc(4096*8); */
 
     initmem(ram.sbank, 8192 * mbc.ramsize);
@@ -171,8 +216,6 @@ int rom_load(void)
 
     c = header[0x0143];
         hw.cgb = ((c == 0x80) || (c == 0xc0)) && !forcedmg;
-        
-    close(fd);
 
     return 0;
 }