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KA10: Another attempt to get 7track parity right on TM10

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This commit is contained in:
Richard Cornwell 2019-08-11 13:57:46 -04:00
parent 5cc548d83f
commit 5d64407b34
1 changed files with 2 additions and 2 deletions
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4
PDP10/kx10_mt.c
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@ -615,7 +615,7 @@ t_stat mt_srv(UNIT * uptr)
if (uptr->flags & MTUF_7TRK) {
cc = 6 * (5 - uptr->CPOS);
ch = mt_buffer[uptr->BPOS];
if ((((uptr->CNTRL & ODD_PARITY) ? 0x40 : 0) ^
if ((((uptr->CNTRL & ODD_PARITY) ? 0x40 : 0) ^ (ch & 0x40) ^
parity_table[ch & 0x3f]) == 0) {
mt_status |= PARITY_ERR;
}
@ -694,7 +694,7 @@ t_stat mt_srv(UNIT * uptr)
if ((uptr->CNTRL & MT_BRFUL) != 0) {
if (uptr->flags & MTUF_7TRK) {
ch = mt_buffer[uptr->BPOS];
if ((((uptr->CNTRL & ODD_PARITY) ? 0x40 : 0) ^
if ((((uptr->CNTRL & ODD_PARITY) ? 0x40 : 0) ^ (ch & 0x40) ^
parity_table[ch & 0x3f]) == 0) {
mt_status |= PARITY_ERR;
}