Wanted: EmuTOS ROMs for Mega St

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sqward
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Wanted: EmuTOS ROMs for Mega St

Post by sqward » Sun Sep 27, 2020 12:02 pm

Hi there
I'll by trying to get TF running in my Mega ST and EmuTOS seems to be the easiest route. Is there anyone who could burn and sell me chips?
Regards
Sqward

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PhilC
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Re: Wanted: EmuTOS ROMs for Mega St

Post by PhilC » Sun Sep 27, 2020 12:24 pm

@sqward I put a plcc rom in with your TF card, or were you looking for 32 pin roms?
If it ain't broke, test it to Destruction.

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Re: Wanted: EmuTOS ROMs for Mega St

Post by sqward » Sun Sep 27, 2020 12:48 pm

32Pins. I don't have an adapter sadly.

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PhilC
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Re: Wanted: EmuTOS ROMs for Mega St

Post by PhilC » Sun Sep 27, 2020 3:15 pm

sqward wrote:
Sun Sep 27, 2020 12:48 pm
32Pins. I don't have an adapter sadly.
The adaptors are £12 for the exxos store but you also need a decoder for 256k Roms. Either that or two 32 pin to 28 pin adaptors and burn the boot rom that Agranlund used to load too from hard disk or floppy?
If it ain't broke, test it to Destruction.

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JezC
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Re: Wanted: EmuTOS ROMs for Mega St

Post by JezC » Sun Sep 27, 2020 4:10 pm

PhilC wrote:
Sun Sep 27, 2020 3:15 pm
The adaptors are £12 for the exxos store but you also need a decoder for 256k Roms. Either that or two 32 pin to 28 pin adaptors and burn the boot rom that Agranlund used to load too from hard disk or floppy?
The Boot ROM image from agranlund is 192k, so another option might be to use 6x 27C256 EPROMS and change the ROM size links over...

sqward
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Re: Wanted: EmuTOS ROMs for Mega St

Post by sqward » Sun Sep 27, 2020 5:15 pm

That was my preference for now: 6x64kb EPROMS.

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PhilC
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Re: Wanted: EmuTOS ROMs for Mega St

Post by PhilC » Sun Sep 27, 2020 8:14 pm

sqward wrote:
Sun Sep 27, 2020 5:15 pm
That was my preference for now: 6x64kb EPROMS.
I have some 27c256 that I can burn you an image onto. I'll have a go during the week and let you know
If it ain't broke, test it to Destruction.

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JezC
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Re: Wanted: EmuTOS ROMs for Mega St

Post by JezC » Sun Sep 27, 2020 8:38 pm

@PhilC The trick for me was to trim some 'rubbish' from the end of the image (some comment in the binary about the brutal end... which was present in more than one place!)

Without doing that, the files were too big for the pair of 27C512 EPROMS I had (courtesy of rubber_jonnie)...but they may fit in the 192k available with 6x 27C256...I just don't know.

If the image is too big, you can trim it down quite a bit using the above method.

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Re: Wanted: EmuTOS ROMs for Mega St

Post by sqward » Sun Sep 27, 2020 10:35 pm

PhilC wrote:
Sun Sep 27, 2020 8:14 pm
I have some 27c256 that I can burn you an image onto. I'll have a go during the week and let you know
Thanks mate!

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