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@@ -7,25 +7,18 @@
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-/* Interface
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-** Scratch Buffer
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-addr 3 byte
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-size 1 byte
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-
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-** Call Interface
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-cmd 1 byte
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-sector 4 bytes
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-count 1 byte
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-return 1 byte
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-
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-** Commands
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- * disk_init
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- * disk_read
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- * disk_write
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-*/
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+/*
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+ * Interface ** Scratch Buffer addr 3 byte size 1 byte
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+ *
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+ * ** Call Interface cmd 1 byte sector 4 bytes count 1 byte return 1 byte
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+ *
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+ * ** Commands * disk_init * disk_read * disk_write
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+ */
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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-/* Initialize Disk Drive */
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+/*
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+ * Initialize Disk Drive
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+ */
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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#include <string.h>
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#include <string.h>
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@@ -33,158 +26,175 @@ return 1 byte
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// TODO: Figure out gobal vars ?!?
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// TODO: Figure out gobal vars ?!?
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-DSTATUS Stat = 0 ; //STA_NOINIT; /* Disk status */
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+DSTATUS Stat = 0; // STA_NOINIT; /* Disk status */
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-DSTATUS disk_initialize (BYTE drv) {
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-
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+DSTATUS disk_initialize(BYTE drv)
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+{
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+
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byte retval;
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byte retval;
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- #ifdef MMIO_DEBUG
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- printfc("SNES::disk_initialize: called drv=%i stat=%i\n",drv,Stat);
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- #endif
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- if (drv) return STA_NOINIT; /* Supports only single drive */
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+#ifdef MMIO_DEBUG
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+ printfc("SNES::disk_initialize: called drv=%i stat=%i\n", drv, Stat);
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+#endif
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+ if (drv)
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+ return STA_NOINIT; /* Supports only single drive */
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Stat |= STA_NOINIT;
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Stat |= STA_NOINIT;
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- #ifdef MMIO_DEBUG
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- printfc("SNES::disk_initialize: stat=%i\n",Stat);
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- #endif
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- *(byte*) MMIO_RETVAL = STA_VOID;
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- *(byte*) MMIO_CMD = CMD_INIT;
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- #ifdef MMIO_DEBUG
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+#ifdef MMIO_DEBUG
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+ printfc("SNES::disk_initialize: stat=%i\n", Stat);
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+#endif
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+ *(byte *) MMIO_RETVAL = STA_VOID;
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+ *(byte *) MMIO_CMD = CMD_INIT;
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+#ifdef MMIO_DEBUG
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printfc("SNES::disk_initialize: poll retval\n");
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printfc("SNES::disk_initialize: poll retval\n");
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- #endif
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- while((retval = *(byte*) MMIO_RETVAL) == STA_VOID);
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- Stat &= ~STA_NOINIT; /* When device goes ready, clear STA_NOINIT */
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- #ifdef MMIO_DEBUG
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- printfc("SNES::disk_initialize: done Stat=%i\n",Stat);
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- #endif
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+#endif
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+ while ((retval = *(byte *) MMIO_RETVAL) == STA_VOID);
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+ Stat &= ~STA_NOINIT; /* When device goes ready, clear STA_NOINIT */
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+#ifdef MMIO_DEBUG
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+ printfc("SNES::disk_initialize: done Stat=%i\n", Stat);
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+#endif
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return Stat;
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return Stat;
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}
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}
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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-/* Return Disk Status */
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+/*
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+ * Return Disk Status
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+ */
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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-DSTATUS disk_status (BYTE drv){
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- if (drv) return STA_NOINIT; /* Supports only single drive */
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+DSTATUS disk_status(BYTE drv)
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+{
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+ if (drv)
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+ return STA_NOINIT; /* Supports only single drive */
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return Stat;
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return Stat;
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}
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}
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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-/* Read Sector(s) */
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+/*
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+ * Read Sector(s)
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+ */
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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-DRESULT disk_read (
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- BYTE drv, /* Physical drive nmuber (0) */
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- BYTE *buff, /* Data buffer to store read data */
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- DWORD sector, /* Sector number (LBA) */
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- BYTE count /* Sector count (1..255) */
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-)
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+DRESULT disk_read(BYTE drv, /* Physical drive nmuber (0) */
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+ BYTE * buff, /* Data buffer to store read data */
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+ DWORD sector, /* Sector number (LBA) */
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+ BYTE count /* Sector count (1..255) */
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+ )
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{
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{
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DWORD offset;
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DWORD offset;
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INT size;
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INT size;
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byte retval;
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byte retval;
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word i;
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word i;
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-
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- #ifdef MMIO_DEBUG
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- printfc("SNES::disk_read: sector=%li count=%i\n",sector,count);
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- #endif
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- if (drv || !count) return RES_PARERR;
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- #ifdef MMIO_DEBUG
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+
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+#ifdef MMIO_DEBUG
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+ printfc("SNES::disk_read: sector=%li count=%i\n", sector, count);
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+#endif
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+ if (drv || !count)
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+ return RES_PARERR;
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+#ifdef MMIO_DEBUG
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printfc("SNES::disk_read: drv ok\n");
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printfc("SNES::disk_read: drv ok\n");
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- #endif
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- if (Stat & STA_NOINIT) return RES_NOTRDY;
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- #ifdef MMIO_DEBUG
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+#endif
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+ if (Stat & STA_NOINIT)
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+ return RES_NOTRDY;
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+#ifdef MMIO_DEBUG
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printfc("SNES::disk_read: sta ok\n");
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printfc("SNES::disk_read: sta ok\n");
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- #endif
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-
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- *(byte*) MMIO_RETVAL = STA_VOID;
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- *(byte*) MMIO_CMD = CMD_READ;
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-
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- *(byte*) MMIO_SECTOR01 = (sector >> 24) & 0xff;
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- *(byte*) MMIO_SECTOR02 = (sector >> 16) & 0xff;
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- *(byte*) MMIO_SECTOR03 = (sector >> 8) & 0xff;
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- *(byte*) MMIO_SECTOR04 = (sector) & 0xff;
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-
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- *(byte*) MMIO_COUNT = count;
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-
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- #ifdef MMIO_DEBUG
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+#endif
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+
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+ *(byte *) MMIO_RETVAL = STA_VOID;
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+ *(byte *) MMIO_CMD = CMD_READ;
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+
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+ *(byte *) MMIO_SECTOR01 = (sector >> 24) & 0xff;
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+ *(byte *) MMIO_SECTOR02 = (sector >> 16) & 0xff;
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+ *(byte *) MMIO_SECTOR03 = (sector >> 8) & 0xff;
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+ *(byte *) MMIO_SECTOR04 = (sector) & 0xff;
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+
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+ *(byte *) MMIO_COUNT = count;
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+
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+#ifdef MMIO_DEBUG
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printfc("SNES::disk_read: poll retval\n");
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printfc("SNES::disk_read: poll retval\n");
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- #endif
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- while((retval = *(byte*) MMIO_RETVAL) == STA_VOID);
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-
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-
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- #ifdef MMIO_DEBUG
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- printfc("SNES::disk_read: copy buffer to %lx\n",SHARED_ADDR);
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- #endif
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- for (i=0;i<(count*512);i++){
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- buff[i] = *(byte*)(SHARED_ADDR+i);
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- #ifdef MMIO_DEBUG
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- if ( i < 4)
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- printfc("0x%x ",buff[i]);
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- #endif
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+#endif
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+ while ((retval = *(byte *) MMIO_RETVAL) == STA_VOID);
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+
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+
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+#ifdef MMIO_DEBUG
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+ printfc("SNES::disk_read: copy buffer to %lx\n", SHARED_ADDR);
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+#endif
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+ for (i = 0; i < (count * 512); i++) {
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+ buff[i] = *(byte *) (SHARED_ADDR + i);
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+#ifdef MMIO_DEBUG
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+ if (i < 4)
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+ printfc("0x%x ", buff[i]);
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+#endif
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}
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}
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- #ifdef MMIO_DEBUG
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+#ifdef MMIO_DEBUG
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printfc("\n");
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printfc("\n");
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- #endif
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+#endif
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return retval;
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return retval;
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}
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}
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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-/* Write Sector(s) */
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+/*
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+ * Write Sector(s)
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+ */
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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#if _READONLY == 0
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#if _READONLY == 0
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-DRESULT disk_write (
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- BYTE drv, /* Physical drive nmuber (0) */
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- const BYTE *buff, /* Data to be written */
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- DWORD sector, /* Sector number (LBA) */
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- BYTE count /* Sector count (1..255) */
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-)
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+DRESULT disk_write(BYTE drv, /* Physical drive nmuber (0) */
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+ const BYTE * buff, /* Data to be written */
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+ DWORD sector, /* Sector number (LBA) */
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+ BYTE count /* Sector count (1..255) */
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+ )
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{
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{
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DWORD offset;
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DWORD offset;
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INT size;
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INT size;
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- if (drv || !count) return RES_PARERR;
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- if (Stat & STA_NOINIT) return RES_NOTRDY;
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+ if (drv || !count)
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+ return RES_PARERR;
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+ if (Stat & STA_NOINIT)
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+ return RES_NOTRDY;
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- offset = sector * 512;
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+ offset = sector * 512;
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size = count * 512;
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size = count * 512;
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return RES_OK;
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return RES_OK;
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}
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}
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-#endif /* _READONLY */
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+#endif /* _READONLY */
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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-/* Miscellaneous Functions */
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+/*
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+ * Miscellaneous Functions
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+ */
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/*-----------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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#if _USE_IOCTL != 0
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#if _USE_IOCTL != 0
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-DRESULT disk_ioctl (
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- BYTE drv, /* Physical drive nmuber (0) */
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- BYTE ctrl, /* Control code */
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- void *buff /* Buffer to send/receive data block */
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-)
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+DRESULT disk_ioctl(BYTE drv, /* Physical drive nmuber (0) */
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+ BYTE ctrl, /* Control code */
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+ void *buff /* Buffer to send/receive data block */
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+ )
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{
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{
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- BYTE n, w, ofs, dl, dh, *ptr = (BYTE*)buff;
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+ BYTE n, w, ofs, dl, dh, *ptr = (BYTE *) buff;
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- if (drv) return RES_PARERR;
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- if (Stat & STA_NOINIT) return RES_NOTRDY;
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+ if (drv)
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+ return RES_PARERR;
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+ if (Stat & STA_NOINIT)
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+ return RES_NOTRDY;
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switch (ctrl) {
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switch (ctrl) {
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- case GET_SECTOR_COUNT : /* Get number of sectors on the disk (DWORD) */
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- ofs = 60; w = 2; n = 0;
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+ case GET_SECTOR_COUNT: /* Get number of sectors on the disk (DWORD) */
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+ ofs = 60;
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+ w = 2;
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+ n = 0;
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break;
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break;
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- case GET_SECTOR_SIZE : /* Get sectors on the disk (WORD) */
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- *(WORD*)buff = 512;
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+ case GET_SECTOR_SIZE: /* Get sectors on the disk (WORD) */
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+ *(WORD *) buff = 512;
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return RES_OK;
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return RES_OK;
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- case GET_BLOCK_SIZE : /* Get erase block size in sectors (DWORD) */
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- *(DWORD*)buff = 32;
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+ case GET_BLOCK_SIZE: /* Get erase block size in sectors (DWORD) */
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+ *(DWORD *) buff = 32;
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return RES_OK;
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return RES_OK;
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default:
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default:
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@@ -192,8 +202,4 @@ DRESULT disk_ioctl (
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}
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}
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return RES_OK;
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return RES_OK;
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}
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}
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-#endif /* _USE_IOCTL != 0 */
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-
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-
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-
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-
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+#endif /* _USE_IOCTL != 0 */
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