Christian wrote:Yes, the NEC V20 and the 8087 just plug in. No other changes required. The internal header was intended for an Amiga (not PC) RAM expansion - in fact the 1 MB memory expansion for the German A2000A has the matching holes to solder in a connector. However, it doesn’t work. Commodore never got that feature working. I don’t think it’s as bad as the internal memory expansion for the Supra 4x4 SCSI host adapter for the A1000 which shorted out - Supra dropped that feature quietly just as Commodore didn’t mention that use of that header.
Thanks for the enlightenment
So no use in digging out one of my old A2000A 1mb board and solder in an pin socket and plugging it to test?
Would be cool to test it, but if you KNOW it does not work then I will forget it.