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FDC fix 8/10 (Hervé Poussineau): 

- Replaces bootsel field by the whole tdr register. It may be easier if we want to later add support for tapes.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4288 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-04-29 16:17:42 +00:00
parent 7737052092
commit 46d3233ba0
1 changed files with 10 additions and 10 deletions
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20
hw/fdc.c
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@ -467,10 +467,10 @@ struct fdctrl_t {
uint8_t sra;
uint8_t srb;
uint8_t dor;
uint8_t tdr;
uint8_t dsr;
uint8_t msr;
uint8_t cur_drv;
uint8_t bootsel;
uint8_t status0;
uint8_t status1;
uint8_t status2;
@ -606,13 +606,13 @@ static void fdc_save (QEMUFile *f, void *opaque)
/* Controller state */
qemu_put_8s(f, &s->sra);
qemu_put_8s(f, &s->srb);
qemu_put_8s(f, &s->tdr);
qemu_put_8s(f, &s->dsr);
qemu_put_8s(f, &s->msr);
qemu_put_8s(f, &s->status0);
qemu_put_8s(f, &s->status1);
qemu_put_8s(f, &s->status2);
qemu_put_8s(f, &s->cur_drv);
qemu_put_8s(f, &s->bootsel);
/* Command FIFO */
qemu_put_buffer(f, s->fifo, FD_SECTOR_LEN);
qemu_put_be32s(f, &s->data_pos);
@ -651,13 +651,13 @@ static int fdc_load (QEMUFile *f, void *opaque, int version_id)
/* Controller state */
qemu_get_8s(f, &s->sra);
qemu_get_8s(f, &s->srb);
qemu_get_8s(f, &s->tdr);
qemu_get_8s(f, &s->dsr);
qemu_get_8s(f, &s->msr);
qemu_get_8s(f, &s->status0);
qemu_get_8s(f, &s->status1);
qemu_get_8s(f, &s->status2);
qemu_get_8s(f, &s->cur_drv);
qemu_get_8s(f, &s->bootsel);
/* Command FIFO */
qemu_get_buffer(f, s->fifo, FD_SECTOR_LEN);
qemu_get_be32s(f, &s->data_pos);
@ -762,12 +762,15 @@ static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq)
static inline fdrive_t *drv0 (fdctrl_t *fdctrl)
{
return &fdctrl->drives[fdctrl->bootsel];
return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
}
static inline fdrive_t *drv1 (fdctrl_t *fdctrl)
{
return &fdctrl->drives[1 - fdctrl->bootsel];
if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
return &fdctrl->drives[1];
else
return &fdctrl->drives[0];
}
static fdrive_t *get_cur_drv (fdctrl_t *fdctrl)
@ -848,11 +851,8 @@ static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value)
/* Tape drive register : 0x03 */
static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl)
{
uint32_t retval = 0;
uint32_t retval = fdctrl->tdr;
/* Disk boot selection indicator */
retval |= fdctrl->bootsel << 2;
/* Tape indicators: never allowed */
FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
return retval;
@ -867,7 +867,7 @@ static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value)
}
FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
/* Disk boot selection indicator */
fdctrl->bootsel = (value & FD_TDR_BOOTSEL) >> 2;
fdctrl->tdr = value & FD_TDR_BOOTSEL;
/* Tape indicators: never allow */
}