Nick Westgate wrote:
On Sep 25, 2:37 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:Would it be possible to just hold off card initialization for a few more milliseconds, after voltages have stabilized?I presume this isn't ideal because a bootable card has to identify itself as such in its ROM when the RESET handler comes a-looking, and whether CB is a bootable card (or even has a ROM) isn't determined until the FPGA is loaded. No doubt there is a more convoluted solution ...
So, the problem is that the /RESET line is not held down long enough? That's a pretty easy fix, too--again a single capacitor. In fact, any card is allowed to hold down the /RESET line, as the Disk ][ Controller card does. -michael NadaNet 3.0 for Apple II parallel computing! Home page: http://home.comcast.net/~mjmahon/ "The wastebasket is our most important design tool--and it's seriously underused."