| Notes For V2.9-11 | |
| 1. New Features | |
| 1.1 GRI-909 | |
| - This is a new simulator for the GRI-909. | |
| - It has been hand-tested; so far, no software has been discovered. | |
| 1.2 VAX | |
| - SET CPU CONHALT will cause a HALT instruction to return to the | |
| boot ROM console rather than to SIMH. SET CPU SIMHALT restores | |
| the default behavior. | |
| - BRB/W self at IPL 1F stops the simulator. This is the default | |
| behavior of VMS at exit. | |
| 1.3 PDP-18b | |
| - ATTACH -A PTR/PTP attaches the reader and punch in ASCII mode. | |
| In ASCII mode, the reader automatically sets the high order bit | |
| of incoming alphabetic data, and the punch clears the high order | |
| bit of outgoing data. | |
| 1.4 SCP | |
| - DO -V echoes commands from the file as they are executed. | |
| - Under Windows, execution priority is set BELOW_NORMAL when the | |
| simulator is running. | |
| 2. Release Notes | |
| 2.1 Bugs Fixed | |
| - PDP-11 CPU: fixed updating of MMR0 on a memory management error. | |
| - VAX FPA: changed function names to avoid conflict with C math library. | |
| - 1401 MT: read end of record generates group mark without word mark. | |
| - 1401 DP: fixed address generation and checking. | |
| - SCP: an EXIT within a DO command will cause the simulator to exit. | |
| 3. In Progress | |
| - Interdata 16b/32b: coded, not tested. | |
| - SDS 940: coded, not tested. | |
| - IBM 1620: coded, not tested. | |
| If you would like to help with the debugging of the untested simulators, | |
| they can be made available by special request. |