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Re: DiagROM for ST
Posted: Mon Feb 11, 2019 2:36 am
by PaulJ
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 8:01 am
by terriblefire
not sure how your setup is working but I had to byteswap the rom image to get it to work on the Amiga. My ST setup has hi and lo roms.
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 3:31 pm
by PaulJ
I'm burning the file as is into a 16 bit eprom. I do the same for TOS which I have compared to. Both files have the text readable which means both files are not byte swapped. I have done a byte swap and attempted execution with the same results. Out of curiousity what did you use to assemble the code? This is really strange..has to be something stupid...
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 4:01 pm
by terriblefire
It was assembled with vasm. The code is assembly anyway.
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 4:21 pm
by terriblefire
Try using the rom with Hatari before going any further
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 5:35 pm
by PaulJ
Good idea, I'll give it a try.
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 6:11 pm
by PaulJ
Hmmm.. didn't expect that... works fine with Hatari.. well at least I know I'm working with a functional image... and good hardware.. hmmm guess I'll have to figure this one out.
- DM.jpg (58.17 KiB) Viewed 6511 times
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 6:17 pm
by PaulJ
Exxos, out of curiosity does your fast rom adaptor have the high byte in the most significant byte of the word? Guess its time to try 8 bit roms.
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 6:25 pm
by exxos
PaulJ wrote: ↑Mon Feb 11, 2019 6:17 pm
Exxos, out of curiosity does your fast rom adaptor have the high byte in the most significant byte of the word? Guess its time to try 8 bit roms.
Low bytes are first. So it goes LO HI LO HI. Nothing has been swapped out with them.
Re: DiagROM for ST
Posted: Mon Feb 11, 2019 7:34 pm
by PaulJ
Yes, that what I would expect.
The actual memory dump from DiagROM on Hatari looks just like the image which I would expect.
- DR2.jpg (209.42 KiB) Viewed 6501 times
Just looked through my roms for a 128k, 256k 120ns or better and came up short. Only roms I found were 200ns. Don't think that will cut it. Have to put some on order.