projects / pdp8.git / blame
| Commit | Line | Data |
|---|---|---|
| 81e70d48 PH |
1 | /******************************************************************** |
| 2 | /******************************************************************** | |
| 3 | / INTERRUPT HANDLING | |
| 4 | ||
| 5 | PAGE | |
| 6 | ||
| 7 | IHAND, DCA INTAC / SAVE AC | |
| 8 | RAR | |
| 9 | DCA INTLNK / AND LINK | |
| 10 | ||
| 11 | KSF / SKIP IF KEYBOARD FLAG SET | |
| 12 | SKP | |
| 13 | JMP TTIHAN / HANDLE TELETYPE INPUT | |
| 14 | ||
| 15 | TSF / SKIP IF PRINTER FLAG SET | |
| 16 | SKP | |
| 17 | JMP TTOHAN / HANDLE TELETYPE OUTPUT | |
| 18 | ||
| 19 | HLT / OH, AN UNKNOWN INTERRUPT! | |
| 20 | ||
| 21 | IEND, CLA CLL / RESTORE LINK | |
| 22 | TAD INTLNK | |
| 23 | RAL | |
| 24 | TAD INTAC / RESTORE AC | |
| 25 | ION / SWITCH ON INTERRUPT AGAIN | |
| 26 | JMP I INTR / RETURN FROM INTERRUPT | |
| 27 | ||
| 28 | / INTERRUPT TIME BACKUPS OF AC AND LINK | |
| 29 | INTAC, 0 / INTERRUPT BACKUP AC | |
| 30 | INTLNK, 0 / INTERRUPT BACKUP OF LINK | |
| 31 | ||
| 32 | /******************************************************************** | |
| 33 | / TELETYPE INPUT HANDLER | |
| 34 | ||
| 35 | TTIHAN, | |
| 36 | KRB / READ AND CLEAR FLAG | |
| 37 | AND K177 / MASK TO 7 BITS - I HATE PARITY! | |
| 38 | DCA KBCHAR / SAVE FOR USE | |
| 39 | ||
| 40 | TAD KBCHAR | |
| 41 | TAD CKDMPS | |
| 42 | SNA | |
| 43 | JMS I XDUMPS / SOURCE DUMP (DEBUG) | |
| 44 | ||
| 45 | CLA CLL | |
| 46 | TAD KBCHAR | |
| 47 | TAD CKDMPT | |
| 48 | SNA | |
| 49 | JMS I XDUMPT / TARGET DUMP (DEBUG) | |
| 50 | ||
| 51 | CLA CLL | |
| 52 | TAD KBCHAR | |
| 53 | TAD CKDUMP | |
| 54 | SNA | |
| 55 | JMS I XDUMP / NORMAL DUMP | |
| 56 | ||
| 57 | CLA CLL | |
| 58 | TAD KBCHAR | |
| 59 | TAD CKKILL | |
| 60 | SNA | |
| 61 | JMP I XEXIT | |
| 62 | ||
| 63 | CLA CLL | |
| 64 | TAD KBCHAR | |
| 65 | TAD CKHALT | |
| 66 | SNA | |
| 67 | HLT | |
| 68 | ||
| 69 | JMP IEND | |
| 70 | ||
| 71 | K177, 177 | |
| 72 | KBCHAR, 0 | |
| 73 | ||
| 74 | / COMMAND KEYS | |
| 75 | ||
| 76 | CKDUMP, -104 / D | |
| 77 | CKDMPS, -123 / S | |
| 78 | CKDMPT, -124 / T | |
| 79 | ||
| 80 | CKKILL, -3 / CTRL-C | |
| 81 | CKHALT, -10 / CTRL-H | |
| 82 |