[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Super Serial Card help

David Wilson <mcs6502@gmail.com> wrote:

> Here is a test procedure for the Super Serial Card ACIA.
> 
> ]CALL -151
> *C0A9:00       ; reset 6551
> *C0AB:1E       ; CtrlReg: 1 stop, 8 data, RxC=BRG, 9600bps
> *C0AA:0B       ; CommReg: no parity, no echo, no irqs, DTR
> *C0A8:41       ; send A
> *C0A8:42       ; send B
> 
> If that works then it looks like only the ROM or decoding is bad.
> Try re-seating the ROM (location 4C), 74LS00 (2C), 74LS32 (3C), 74LS11
> (1C) and the 74LS259 (1B).

Thank you for that - it will be tomorrow (or perhaps this evening)
before I'll be able to try it though.

I'll let you know what happens.

Jim
-- 
"Well, well. We've come a long way from the Prime Minister's
 exploding cake." - Adam West, Batman. 

Find me at http://www.UrsaMinorBeta.co.uk