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added BPB struct definition and reserved space for four partitions/SD-card

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Markus Fröschle
2013-05-02 05:22:58 +00:00
parent 9854df5018
commit d789ac6a8c
1 changed files with 17 additions and 0 deletions
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17
sources/xhdi_sd.c
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@@ -12,6 +12,23 @@
#define DRIVER_VERSION 0x130
typedef struct
{
uint16_t recsiz; /* bytes per sector */
uint16_t clsiz; /* sectors per cluster */
uint16_t clsizb; /* bytes per cluster */
uint16_t rdlen; /* directory length */
uint16_t fsiz; /* length of FAT */
uint16_t fatrec; /* start of 2nd FAT */
uint16_t datrec; /* 1st free sector */
uint16_t numcl; /* overall number of clusters */
uint16_t bflags; /* flags */
/* Bit 0: 0 (12-Bit-FAT), 1 16-Bit-FAT */
/* Bit 1: 0 (two FATs), 1 (one FAT) */
} __attribute__((__packed__)) BPB;
static BPB sd_bpb[4]; /* space for four partitions on SD card */
static xhdi_call_fun old_vector = NULL;
__attribute__((__interrupt__)) xhdi_call_fun xhdi_sd_install(xhdi_call_fun ov)