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bs: more changes, functions for symbolic register access, incl DMX

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This commit is contained in:
Jim
2011-10-20 17:23:15 -04:00
parent e43a2167f0
commit 53893d85ae
5 changed files with 202 additions and 194 deletions
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18
emdev.h
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@@ -1184,10 +1184,10 @@ int devmt (int class, int func, int device) {
TRACE(T_INST|T_TIO, " DMC channels: ['%o]='%o, ['%o]='%o, nwords=%d", dmxreg, dmxaddr, dmxreg+1, (unsigned int) (dmcpair & 0xffff), dmxnw);
} else { /* DMA */
dmxreg = dmxreg << 1;
dmxnw = regs.sym.regdmx[dmxreg];
dmxnw = getar16(REGDMX16+dmxreg);
dmxnw = -((dmxnw>>4) | 0xF000);
dmxaddr = ((regs.sym.regdmx[dmxreg] & 3)<<16) | regs.sym.regdmx[dmxreg+1];
TRACE(T_INST|T_TIO, " DMA channels: ['%o]='%o, ['%o]='%o/%o, nwords=%d", dmxreg, regs.sym.regdmx[dmxreg], dmxreg+1, dmxaddr>>16, dmxaddr&0xffff, dmxnw);
dmxaddr = ((getar16(REGDMX16+dmxreg) & 3)<<16) | getar16(REGDMX16+dmxreg+1);
TRACE(T_INST|T_TIO, " DMA channels: ['%o]='%o, ['%o]='%o/%o, nwords=%d", dmxreg, swap16(regs.sym.regdmx[dmxreg]), dmxreg+1, dmxaddr>>16, dmxaddr&0xffff, dmxnw);
}
if (dmxnw < 0) { /* but is legal for >32K DMC transfer... */
printf("devmt: requested negative DMX of size %d\n", dmxnw);
@@ -1226,8 +1226,8 @@ int devmt (int class, int func, int device) {
if (dmxchan & 0x0800) { /* if DMC... */
put16io(dmxaddr+dmxnw, dmxreg); /* update starting address */
} else { /* if DMA...
regs.sym.regdmx[dmxreg] += (dmxnw<<4); /* increment # words */
regs.sym.regdmx[dmxreg+1] += dmxnw; /* increment address */
putar16(REGDMX16+dmxreg, getar16(REGDMX16+dmxreg) + (dmxnw<<4)); /* increment # words */
putar16(REGDMX16+dmxreg+1, getar16(REGDMX16+dmxreg+1) + dmxnw); /* increment address */
}
/* if chaining, bump channel number and decrement # channels */
@@ -1998,7 +1998,7 @@ int devdisk (int class, int func, int device) {
while (dc[dx].dmanch >= 0) {
dmareg = dc[dx].dmachan << 1;
dmanw = regs.sym.regdmx[dmareg];
dmanw = getar16(REGDMX16+dmareg);
dmanw = -(dmanw>>4);
if (dmanw > 1040) {
warn("disk I/O limited to 1040 words");
@@ -2008,8 +2008,8 @@ int devdisk (int class, int func, int device) {
warn("disk I/O size < 0; set to 0");
dmanw = 0;
}
dmaaddr = ((regs.sym.regdmx[dmareg] & 3)<<16) | regs.sym.regdmx[dmareg+1];
TRACE(T_INST|T_DIO, " DMA channels: nch-1=%d, ['%o]='%o, ['%o]='%o, nwords=%d\n", dc[dx].dmanch, dc[dx].dmachan, regs.sym.regdmx[dmareg], dc[dx].dmachan+1, dmaaddr, dmanw);
dmaaddr = ((getar16(REGDMX16+dmareg) & 3)<<16) | getar16(REGDMX16+dmareg+1);
TRACE(T_INST|T_DIO, " DMA channels: nch-1=%d, ['%o]='%o, ['%o]='%o, nwords=%d\n", dc[dx].dmanch, dc[dx].dmachan, swap16(regs.sym.regdmx[dmareg]), dc[dx].dmachan+1, dmaaddr, dmanw);
if (order == 5) {
if (getcrs16(MODALS) & 020)
@@ -2049,7 +2049,7 @@ int devdisk (int class, int func, int device) {
}
}
regs.sym.regdmx[dmareg] = 0;
regs.sym.regdmx[dmareg+1] += dmanw;
putar16(REGDMX16+dmareg+1, getar16(REGDMX16+dmareg+1) + dmanw);
dc[dx].dmachan += 2;
dc[dx].dmanch--;
}