Changes
/* I/O Ports */
|Address (default) || Address (alternate) || Usage
|-
|DFxxh || N/A || [[Schneiderware Pseudo ROM| Schneiderware RAM/EPROM ]] - Expansion ROM bank number (W)<br>Battery-backed SRAM and/or EPROM are selected when the bank-number matches the jumper-selected values; the memory is then mapped to C000h..FFFFh (in case of READing one must also enable upper ROM via Gate Array). The bank number decoding is a bit strange:
* EPROM/Read bank: All 8 bits decoded (bank 00h..FFh)
* SRAM/Read bank: Only lower 4 bits decoded (bank X0h..XFh)
The SRAM/Write mode doesn't disable the internal RAM in the CPC, so writes are going both to SRAM and normal RAM at C000-FFFF, that no matter if upper ROM is enabled/disabled via Gate Array; the author recommended to map VRAM to 4000-7FFF via CRTC registers, in order to prevent video dirt during writing.
|-
|F8E0h || F8F0h (later redefined to F8E4h) || [[Schneiderware Centronics Port]] 8255 PPI Port A (data)
|-
|F8E1h || F8F1h (later redefined to F8E5h) || [[Schneiderware Centronics Port]] 8255 PPI Port B (unused)
|-
|F8E2h || F8F2h (later redefined to F8E6h) || [[Schneiderware Centronics Port]] 8255 PPI Port C (busy/strobe)<br>(bit7=busy, bit6-1=unused, bit0=strobe; strobe is externally inverted)<br>(autolf is wired to GND, all other control/status signals are not connected)
|-
|F8E3h || F8F3h (later redefined to F8E7h) || [[Schneiderware Centronics Port]] 8255 PPI Control
|-
|F8E8h || F8F0h,F8F8h || [[Schneiderware Uni-PIO ]] 8255 PPI #1 Port A ('''without''' pull-ups, with red LEDs)
|-
|F8E9h || F8F1h,F8F9h || [[Schneiderware Uni-PIO ]] 8255 PPI #1 Port B ('''with''' pull-ups and green LEDs)
|-
|F8EAh || F8F2h,F8FAh || [[Schneiderware Uni-PIO ]] 8255 PPI #1 Port C (lower 4bit '''without''' pull-ups and red LEDs, upper 4bit '''with''' pull-ups and green LEDs)
|-
|F8EBh || F8F3h,F8FBh || [[Schneiderware Uni-PIO ]] 8255 PPI #1 Control
|-
|F8ECh || F8F4h,F8FCh || [[Schneiderware Uni-PIO ]] 8255 PPI #2 Port A (without pull-ups or LEDs)
|-
|F8EDh || F8F5h,F8FDh || [[Schneiderware Uni-PIO ]] 8255 PPI #2 Port B (without pull-ups or LEDs)
|-
|F8EEh || F8F6h,F8FEh || [[Schneiderware Uni-PIO ]] 8255 PPI #2 Port C (without pull-ups or LEDs)
|-
|F8EFh || F8F7h,F8FFh || [[Schneiderware Uni-PIO ]] 8255 PPI #2 Control
|-
|F9E0h || F9E2h || [[Schneiderware V/24 Interface]] 8251 USART Data
|-
|F9E1h || F9E3h || [[Schneiderware V/24 Interface]] 8251 USART Control
|-
|F9ECh || F9E8h || [[Schneiderware V/24 Interface]] 8253 Timer 0 (TX clock)
|-
|F9EDh || F9E9h || [[Schneiderware V/24 Interface]] 8253 Timer 1 (RX clock)
|-
|F9EEh || F9EAh || [[Schneiderware V/24 Interface]] 8253 Timer 2 (unused)
|-
|F9EFh || F9EBh || [[Schneiderware V/24 Interface]] 8253 Timer Control<br>Note: Timer clock input is jumper select-able: 2MHz (default), or 1MHz
|-
|FAE0h || N/A || [[Schneiderware Analog Board Converter]] ADC 0848 A/D Converter (R/W)<br>Read: Get 8bit data from selected channel<br>Write: Select channel & mode; bit0..2=channel (0..7), bit3..4=mode, bit5-7=unused<br>
* Mode 0 (or 1) - Differential: Plus=Channel(N), Minus=Channel(N XOR 1)
* Mode 2 - Single-Ended: Plus=Channel(N) and Minus=AGND
* Mode 3 - Pseudo-Differential: Plus=Channel(N) and Minus=Channel(7)
|-
|FAE1h || N/A || [[Schneiderware Analog Board Converter]] DAC 0832 D/A Converter #1 (W)<br>Write: 8bit data
|-
|FAE2h || N/A || [[Schneiderware Analog Board Converter]] DAC 0832 D/A Converter #2 (W)<br>Write: 8bit data
|-
|FAF0h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #1 Port A (Data, 8bit)
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|FAF1h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #1 Port B (Address LSBs, 8bit)
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|FAF2h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #1 Port C (Address MSBs, 7bit; bit7=unused)
|-
|FAF3h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #1 Control
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|FAF4h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #2 Port A (bit0-7=unused)
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|FAF5h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #2 Port B (bit0-5=unused, bit6=Red LED, bit7=Green LED)
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|FAF6h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #2 Port C (programming signals, 8bit)
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|FAF7h || N/A || [[Schneiderware Eprom EPROM Burner ]] 8255 PPI #2 Control
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|FBE2h || BUGGED:FBE1h || [[Schneiderware RTC indexReal Time Clock]] Index/control Control (W)
|-
|FBE3h || BUGGED:FBE2h || [[Schneiderware RTC data Real Time Clock]] Data 4bit (W)
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|FBE4h || BUGGED:FBE3h || [[Schneiderware RTC data Real Time Clock]] Data 4bit (R)
|-
|}
