I have one here that I keep meaning to look into. which shematics had the list of jumpers, since I suppose I just need to locate the correct tracks to make the changes to a dedicated one instead. (this 6800 pod came via you too ...) I was hoping to borrow a 6502 pod to compare against - hey Andy, is your's goign cheap ;)

Since the schematics for the 6502 pod show it can be jumpered to go from 6502 to 6800, has anyone ever converted a dedicated 6800 pod to 6502?

ok, had a squint at the 6502 pod schematics and noted down the jumper differences. not too many differences, it *may* be possible to knock up a GAL to allow you to have a single switch to alternate, but you'd still need to replace the CPU each time. basically, unless I mucked up somewhere ... [W1 and W2] now someone with real schematics may want to check this, it's not too clear. it looks like it's picking up clock 02, buffers it and uses it to drive things. 6502 = pin 39 (02 out) 6800 = pin 37 (02 in) [W3 and W4] eprom pin 19 : 6502 = GND, 6800 = 5v (two images in same rom) [W7,W8 and W9] changes what pin 39 is used for 6502 = ouputs signal through a buffer to BTSC signal (02) 6800 = inputs BTSC signal, AND's with ENABLE (TSC) BTSC is labelled as '02 out' on schematics elsewhere, just seems odd to change it to an input for 6800! [W11 and W12] 6502 = connects pin 5 to VMA signal 6800 = connects VMA signal to 5v [W14] 6502 : test socket pin 3 open 6800 : test socket pin 3 to reverse of clock to pin 37 (uses reverse output of 7474) [W16] 6502 : test socket pin 39 open 6800 : test socket pin 39 to 5v so, whether a 6800 old style can be changed depends upon some signals existing (is VMA implemented in any way, since it's tied high for 6800) so, next on the agenda to look at the 6800 circuit, and see if the necessary control lines exist.