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It helps build a picture where our "good traffic" is coming from..
Thanks :)
maprom 1.8 working on TT
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stephen_usher
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- Posts: 7477
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- Location: Oxford, UK.
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Re: maprom 1.8 working on TT
Both maprom and romspeed do the same thing. They take a copy of the ROM, put it into TT-RAM and then change the 68030 MMU translation tables so that the RAM copy maps to the ROM address. It's as simple as that.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Re: maprom 1.8 working on TT
@stephen_usher yes but going by the results in this thread it seems they do certain things differently due to the massive speed increase the TT has for romspeed Vs maprom.
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thorsten.otto
- Posts: 148
- Joined: Mon Nov 04, 2019 2:20 am
Re: maprom 1.8 working on TT
Could be that maprom marks the mirrored ROM as non-cacheable?Steve wrote: Tue Feb 23, 2021 9:28 pm @stephen_usher yes but going by the results in this thread it seems they do certain things differently due to the massive speed increase the TT has for romspeed Vs maprom.
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stephen_usher
- Site sponsor
- Posts: 7477
- Joined: Mon Nov 13, 2017 7:19 pm
- Location: Oxford, UK.
- Contact:
Re: maprom 1.8 working on TT
Actually, I think the latest version of maprom does turn off the cache due to issues of some kind I can't remember. I recompiled it without that restriction.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.