84PCE:Ports:1000
From WikiTI
| Port | Default | Bits | Information |
| 1000 | 01 | 01 | Reset bit 0 to crash |
| 1001 | 00 | ?? | Freeze if write value greater than 3F |
| 1002 | 06 | 07 | Possibly flash wait states, needs confirmation |
| 1003 | 00 | FF | Latches value written |
| 1004 | 00 | FF | Latches value written |
| 1005 | 00 | ?? | Possibly VRAM access wait states, needs confirmation |
| 1006 | 00 | FF | Latches value written |
| 1007 | FF | FF | Latches value written |
| 1008 | 00 | 01 | Latches value written |
| 1009 | 00 | FF | Ports 1009-100F latch value written |
| 1010 | 00 | 01 | Latches value written |
| 1011 | 00 | FF | Ports 1011-1017 latch value written |
