Changes
The [[ECB Bus]] connector of the board is intended to be plugged into the [[Schneiderware Basisplatine]], but it could be also wired directly to the CPCs Expansion Port. The V/24 board additionally requires a [[Schneiderware Power Supply]] (or another external power supply with +12V/-12V).
== I/O Ports ==
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== Jumper Problems ==
'''Caution''' - The '''clock source''' can be jumpered to 2MHz (default), or to 1MHz. Moreover, the '''handshaking''' signals (CTS/RTS, DTR/DSR) can be disabled via jumpers. There is no good reason for using the 1MHz setting, nor for disabling handshaking at hardware level - these features are only "good" for provoking compatibility problems with software that expects the jumpers to be set to this or that position.
File:Schneiderware 3 V24 (solder side).jpg|V/24 (solder side)
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== Article ==
* [[Schneiderware V/24 Interface|Schneiderware #3 V/24 (RS232 Interface)]] (8/1986 pages 70-77, plus correction from 9/1986 page 80)
== Datasheets ==
* [[Media:8251.pdf|8251 Datasheet]] - older 8251 datasheet (pin-outs only, without programming info)
* [[Media:8251A.pdf|8251A Datasheet]] - newer 8251A datasheet (detailed info)
* [[Media:8253.pdf|8253 Datasheet]] - 8253 Timer Datasheet (slower clock, write-only control registers)
* [[Media:8254.pdf|8254 Datasheet]] - 8254 Timer Datasheet (faster clock, read/write-able control registers, otherwise compatible with 8253)
