CompuServe Messages

No problem about the disappearance… tho Imust admit that not knowing you well, I did entertain the notion that you simply lost interest. Tho you seemed like too nice a fellow to not have simply said that if it were the case. I'll get back to you when I have some actual working piece of hardware to show you. As for "Wroking ROM based software", I pointed out that a fair amount of stuff can simply be ported to the ROM. Working on an EPROM programmer, eh? Do you properly impliment the fast algorithm, including pulling Vcc up to 6VDC during programming??? Eh? Many folks who claim to impliment the fast algorithm don't bother to put in the extra regulator or the extra switching circuitry. I even saw one fool who just did a 2ms pass and if it verified he left it at that. And he sold HUNDREDs of CoCo EPROM programmers. I ended up rewriting his software driver to fix it. I never did any work on a gang programmer, tho. With 64K CoCo 's available for under $70, if I needed to burn a lot of EPROMs I'd use my three Color Computer EPROM programmers and three of my CoCo's! Be sure you have 12.5 volts for Vpp! in the 2764, 27128, and 27256 category, there are versions that take 21 volts and versions (usually, but not always, designated by the suffix -A) that take 12.5 vols Vpp. It gets very confusing! a Fairchild 27C256 reqires 21 V Vpp, and an Intel 27256 takes 12.5 volts. more later. —Marty *** There is a reply: 85761 Enter command, N for next message or <ENTER> for menu:n n