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Old 7th Dec 2019, 12:40 am   #271
JohnBHanson
Heptode
 
Join Date: Aug 2009
Location: Worthing, Sussex, UK.
Posts: 661
Default Re: Gemini 80-Bus System

Thanks - that is wonderful - confirms my suspicions IC14 has the last two digits removed from the device type - but confirms this is a 74LS series. Interesting,

When you get a running system - even your old system with RP/M and this floppy card would you be kind enough to run this mbasic program and send me the output.

Thank you...


10 FOR I=0 TO 255 STEP 8
20 OUT &HE5,I+7
30 P=INP(&HE5)
40 PRINT HEX$(I+7),HEX$(P)
50 NEXT I

many thanks....
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