|F8E1h || F8F1h || Schneiderware Centronics 8255 PPI Port B (unused)
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|F8E2h || F8F2h || Schneiderware Centronics 8255 PPI Port C (busy/strobe=<br>(bit7=busy, bit6-1=unused, bit0=strobe; strobe is externally inverted)
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|F8E3h || F8F3h || Schneiderware Centronics 8255 PPI Control
|F9EEh || F9EAh || Schneiderware V/24 8253 Timer 2 (unused)
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|F9EFh || F9EBh || Schneiderware V/24 8253 Timer Control<br>Note: Timer clock input is jumper select-able: 2MHz (default), or 1MHz
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|colspan=3|Note: Timer clock input is jumper select-able: 2MHz (default), or 1MHz
|}