Willem Progammer - Blank check & Read issues

[simc]

See image below for setup. The chip is a 27c256. Any Comments?

IMG_0290.jpg

[antus]

DIP Switches look right. Do you have the USB connected for power?

[Holden202T]

what about the jumper block on the down side of the eprom, i don't have willem handy to check it.

[simc]

I have the USB for 5V supply, and the d25 to the printer port. Tried two different printer cables too.

[Jayme]

everything looks set right to me. for the dip switches that are on, test them with a multi meter to make sure they contact... holden202 has had experience with dodgy dip switches

[simc]

Just did a chack, 1.4ohms across the switches in the ON position, my meter has about .09 ohm probe resistance, so it seems ok. I retested and still the same. Device is not blank $000000.
Without the USB lead connected, the yellow light dims, and I get a check hardware error so thats an indication the thing is working to a degree.

[Jayme]

what verison software you using? im using 0.97g

[charlay86]

I seem to recall that I had an issue with my parallel port being in the wrong mode (can't remember the correct one off the top of my head) but I had to adjust it in the BIOS of my pc.
failing that it could be dirty contacts... a good spray of contact cleaner can't hurt

[darcy]

Just throwing ideas out there, but my wilem won't play on USB power.
It's only happy when I plug in a power brick.

[Dec_head]

looks slightly different to my willem but the jumpers that are on it seem to be in the same position and i was running a 12 volt power adaptor.
Have you checked the jumper to select usb or power adaptor 5v for usb 12v for power adaptor i think it was.