ops sorry for the empty reply... sh.. happens On Wed, Jul 13, 2016 at 1:44 PM, smf <firstname.lastname@example.org> wrote: > I also meant so say that converting 2764 pin 1 (Vpp) & pin 27 (_PGM) into > something that would allow you to burn a 2364 is likely to be a lot more > complex. if you're desperate enough to want to program an MCM6876x (or whatever with the same pinout) with a programmer not supporting it, consider making an adapter to a 27512 pinout (and of course only using enough address lines to cover the 64kbit one, tie the others to Vcc or GND). The 27512 has an /OE/VPP single pin like the MCMs and such. You must instruct your programmer to only burn the top (or bottom) 8KBytes and use a suitable Vpp: MCM6876x = 25V RD687C64 = 21V 27HC641 = 12.5 or 13V Never trust my memory and always check on the datasheets, I'm not guilty if your EPROM catches fire. Even the old promenade C1 can burn these nice old ICs, what's all this adapter stuff anyhow? If you have a DATA I/O 21A, contact me, or it will probably not program these chips even if it supports it. F Message was sent through the cbm-hackers mailing listReceived on 2016-07-13 12:02:29
Archive generated by hypermail 2.2.0.