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MattisLind / 82S100replacement

A CPLD implementation of the classic 82S100/82S101 as used in for example C64
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Unable to program #2

Closed patzik closed 4 years ago

patzik commented 6 years ago

I had some pcb's made and tried to build the 82s100 replacement. I build the lpt cable to program the cpld but I keep getting an error. "hardware and software settings mismatch" Any suggestions? I use a PCIe card with a parallel port, it's lpt1 and the adress is CEFC-CEFF (I/O Range) I use windows 8, and also tried it on a virtual machine running xp. Same problem...

MattisLind commented 6 years ago

I haven’t tried to use the LPT dongle myself. I always used the USB JTAG dongle. This was controbuted by Github user @jamarju , you have to ask him.

jamarju commented 6 years ago

Double check the schematic taking into account that some pins in the DB25 port loop back: D7-PE, ERROR-GND and D5-ACK. Also make sure you are using version 6.7 of ATMISP, I think that's the only one that supports LPT1 programmers. Also I would try using the standard 378 port just to rule that out.

jamarju commented 6 years ago

Oh, and no virtual machines. I think the timings are critical here.

patzik commented 6 years ago

It's not really a dongle, but internal PCIe card. I figured I had and old pc somewhere in storage and I dug it up, it had an onboard parallel port so I installed xp and the Atmel ISP. This port has address 0378 which is the standard IO address. Works like a charm now, so the cable is fine. I would like to get it to work on my regular pc, but I think the IO address is the cause of the problem, strange because you can actually select the address in the programmer software instead of lpt1

jamarju commented 6 years ago

It may be because of I/O to that port going through additional circuitry and/or driver virtualization, who knows. Anyway I'm glad it worked, enjoy @MattisLind 's PLA, I made one for my breadbin C64 and it works great :)

pazuzu72 commented 6 years ago

Hi, can this project also be used for the C16 / Plus-4, obviously replacing the suitable .PLD? :-)

MattisLind commented 6 years ago

I don't know much about what kind of PLA was used in thus computers. As long as it is a 82S100/82S101 it should be possible I think. According to this page it is a 82S100. http://www.zimmers.net/anonftp/pub/cbm/firmware/computers/plus4/pla.c You have convert the equations to CUPL however.

MattisLind commented 4 years ago

I close this issue since there has been long time and the fact it is most likely related to the hardware used.