Linards Ticmanis wrote:
Michael J. Mahon wrote:My homemade Softcard clone worked fine in my Rev. 7 ][+ back in 1983. That was the "design center" for the Softcard.The problem turned out to be in the software, not in the hardware. I had patched the disk a long time ago with a patch that obviously seems to be IIe-only (it prevents clearing the screen on every warm boot). Transfering a fresh disk image fixed the problem.(The next flakey card is a Videx clone now. It tends to get about 1% of characters wrong. This one doesn't seem to be software based as it happens even without anything booted).
Odd. The problem could be in the transfer to the card (likely if the errors are "stable"), or in the card's SRAM (pretty unusual). -michael Music synthesis for 8-bit Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it is seriously underused."