Yes, I need the hard drive to work and first indications are it doesn't. I did connect the USatan cable to the internal connector and TOS didn't see it. I looked at the donor board and the DMA connector is pretty ratty. Looks like Harry was chewing on it so I may just make an adaptor cable with it to the internal connector so I can connect the Atari DMA test board that runs with the Atari test cartridge. Guess I'll get the meter out while I ponder my course of action. Yup I know better with the Chinese crap but one always think they can win the lottery.
PaulJ's H4 Mongrel Build x 2
Re: PaulJ's H4 Mongrel Build x 2
Re: PaulJ's H4 Mongrel Build x 2
@exxos it looks like no joy on the ultra satan. Get one flash on the boot but it never see's it. @Icky if you get a chance could you try your DMA port to see if its just me or a board issue?
Re: PaulJ's H4 Mongrel Build x 2
I would setup HD10 on a floppy and see if you can find it even listed in the main app first.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: PaulJ's H4 Mongrel Build x 2
Tried some mapping HD app's but no devices seen. Couldn't find HD10. Going to connect up the cheap DA see if something pops.
Re: PaulJ's H4 Mongrel Build x 2
Only difference really from the Alpha is the addition of IC6... you could jumper over it, but the same circuit was tested on a Alpha buffer board by Icky I think a while ago. so shouldn't cause any problems.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: PaulJ's H4 Mongrel Build x 2
Took the DMA connector off an old board and installed it. Connected the test board and tested serial, ROM, MIDI, Printer/Joy ports, DMA, and High REs. These all pass with the exception of DMA. See attached picture. Suspect D3 is the real issue. Will be investigating.
Re: PaulJ's H4 Mongrel Build x 2
@PaulJ - Have just plugged my US in and its not recognised. ACSI bus is but not the device. Will investigate today.
Re: PaulJ's H4 Mongrel Build x 2
Yes @Icky , that's the same indication I get with the driver utility. I used Saleae software with the crapy Chinese DA hardware imitation for a quick look comparing Atari DMA board between a working and not working system. Using the test I always get the same transfer test. It looks like HDCS is missing so I'm going investigate it. Not much there, strait shot from DMA chip. Do you know of a description of the hardware handshake? If I don't find something I'll have to figure out how to use the HP digital analyzer.
Not Working.
Working
Re: PaulJ's H4 Mongrel Build x 2
Just checked from DMA chip P24 to pin 18 on mega dam connector and its open. Unless I screwed up somethings wrong here. Ops cockpit error. It's ok.
Re: PaulJ's H4 Mongrel Build x 2
@PaulJ - I have jumper over buffer and that made no difference so its not the buffer.