IBM System/23 Datamaster: Difference between revisions
| Line 242: | Line 242: | ||
! Test !! Description !! Notes | ! Test !! Description !! Notes | ||
|- | |- | ||
| 00/FF (uninitialized) || Data bus test (undocumented) || writes and reads to port 0x4C (8255 | | 00/FF (uninitialized) || Data bus test (undocumented) || writes and reads to port 0x4C (8255#3, port A). | ||
|- | |- | ||
| 01 || CPU || 8085 self-test. | | 01 || CPU || 8085 self-test. | ||