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Old 24th Apr 2019, 9:29 am   #167
Slothie
Octode
 
Join Date: Apr 2018
Location: Newbury, Berkshire, UK.
Posts: 1,287
Default Re: MK14 schematic revisions

I've been looking at my latest PCB design and to correctly decode the ROM to allow extra memory in the lower 2k is going to require an extra logic IC and the requisite rework to squeeze it in somewhere and still make it look authentic. Still, perhaps that will give me something to think about! I've attached the schematic up here and perhaps you could tell me if the connections on the bottom row (P4) look good to connect the VDU. Note that due to the orientation of the connector, the power (+5) is on the right under the top power connections, and the address lines will be on the right hand side (IE nearest the vertical resistors).

PS I'm back in action after my operation though it will be a month or so before I discover how successful its been - so till then I'm a one-eyed sloth!!
Attached Files
File Type: pdf mk14_2.pdf (225.9 KB, 246 views)
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