I/O Map - CDP18S600
The following table lists the main I/O definitions of the Microboard System.
| CDP18S600 | CDP18S601 CDP18S603 CDP18S606 |
CDP18S602 CDP18S605 CDP18S607 CDP18S610 |
CDP18S603A CDP18S608 |
CDP18S604B CDP18S609 |
Purpose |
|---|---|---|---|---|---|
| OUT 1 |
Set I/O group I/O group 1: VT (Video Terminal) I/O group 8: PIO |
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| OUT 1 | OUT 1 |
Set I/O group I/O group 8: PIO |
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| OUT 1 |
Set I/O group I/O group 1: VT (Video Terminal) I/O group 8: CDP1852 |
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| OUT 1 |
Set I/O group I/O group 8: CDP1852 & CD4536B |
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| Q | Q | Q | Q |
VT: serial output |
|
| EF4 | EF4 | EF4 | EF4 | VT, serial input | |
| OUT 2 | OUT 2 | Group 1: VT Load transmitter | |||
| OUT 3 | OUT 3 | Group 1: VT Load control | |||
| INP 2 | INP 2 | Group 1: VT Read receiver | |||
| INP 3 | INP 3 | Group 1: VT Read status | |||
| EF1 | EF1 | EF1 | Group 8: PIO ARDY | ||
| EF2 | EF2 | EF2 | Group 8: PIO BRDY | ||
| OUT 3 | OUT 4 | OUT 4 & 5 | Group 8: PIO Write to port A | ||
| OUT 2 | OUT 6 | OUT 6 & 7 | Group 8: PIO Write to port B | ||
| OUT 6 | OUT 2 | OUT 2 & 3 | Group 8: PIO Write control register | ||
| INP 3 | INP 4 | INP 4 & 5 | Group 8: PIO Read port A | ||
| INP 2 | INP 6 | INP 6 & 7 | Group 8: PIO Read port B | ||
| INP 6 | INP 2 | INP 2 & 3 | Group 8: PIO Read status | ||
| EF3 | EF3 | Group 8: CDP1852 STB | |||
| OUT 2 | OUT 2 | Group 8: CDP1852 Write to port | |||
| INP 2 | INP 2 | Group 8: CDP1852 Read port | |||
| EF2 | Group 8: CD4536B Timer out | ||||
| OUT 3 | Group 8: CD4536B Write control byte |