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Generalized the sim_disk layer to support large file disk devices (simh, VHD and RAW formats) with out requiring USE_ADDR64, and enhanced the pdp11_rq device to use this capability.

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This commit is contained in:
Mark Pizzolato
2013-03-17 12:02:43 -07:00
parent 60e855807f
commit 2e5b0d54c6
10 changed files with 145 additions and 128 deletions
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6
swtp6800/common/dc-4.c
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@@ -389,7 +389,7 @@ int32 fdcdrv(int32 io, int32 data)
pos = 0x200; /* Read in SIR */
if (dsk_dev.dctrl & DEBUG_read)
printf("\nfdcdrv: Read pos = %ld ($%04X)", pos, (unsigned int) pos);
sim_fseek(dsk_unit[cur_dsk].fileref, pos, 0); /* seek to offset */
sim_fseek(dsk_unit[cur_dsk].fileref, pos, SEEK_SET); /* seek to offset */
sim_fread(dsk_unit[cur_dsk].filebuf, SECSIZ, 1, dsk_unit[cur_dsk].fileref); /* read in buffer */
dsk_unit[cur_dsk].u3 |= BUSY | DRQ; /* set DRQ & BUSY */
dsk_unit[cur_dsk].pos = 0; /* clear counter */
@@ -435,7 +435,7 @@ int32 fdccmd(int32 io, int32 data)
pos += SECSIZ * (dsk_unit[cur_dsk].u5 - 1);
if (dsk_dev.dctrl & DEBUG_read)
printf("\nfdccmd: Read pos = %ld ($%08X)", pos, (unsigned int) pos);
sim_fseek(dsk_unit[cur_dsk].fileref, pos, 0); /* seek to offset */
sim_fseek(dsk_unit[cur_dsk].fileref, pos, SEEK_SET); /* seek to offset */
sim_fread(dsk_unit[cur_dsk].filebuf, SECSIZ, 1, dsk_unit[cur_dsk].fileref); /* read in buffer */
dsk_unit[cur_dsk].u3 |= BUSY | DRQ; /* set DRQ & BUSY */
dsk_unit[cur_dsk].pos = 0; /* clear counter */
@@ -451,7 +451,7 @@ int32 fdccmd(int32 io, int32 data)
pos += SECSIZ * (dsk_unit[cur_dsk].u5 - 1);
if (dsk_dev.dctrl & DEBUG_write)
printf("\nfdccmd: Write pos = %ld ($%08X)", pos, (unsigned int) pos);
sim_fseek(dsk_unit[cur_dsk].fileref, pos, 0); /* seek to offset */
sim_fseek(dsk_unit[cur_dsk].fileref, pos, SEEK_SET); /* seek to offset */
wrt_flag = 1; /* set write flag */
dsk_unit[cur_dsk].u3 |= BUSY | DRQ;/* set DRQ & BUSY */
dsk_unit[cur_dsk].pos = 0; /* clear counter */