ST536 STE EDITION

[Badwolf]

....Any scope for a register with your new big CPLD, though?

Possible yes...

So turn off cache, MMU, TTram... and at which point one has to question why have the accelerator at that point Might as well fit the V1 STE booster at that point I guess

Well, I suspect you're being facetious, but if not: the booster isn't switchable back to a 'default' mode. We can't revert to on-board ROM either. So in lieu of that, the best that can be done is to disable some of the more incompatible aspects for when people might want to run a game or two.

Sure, a switch (or switches) coming out the back is one option (which was my approach with DFB1), but your board is a bit more polished than mine, hence the idea that you could simply boot from cold in normal configuration and run a program to toggle certain hardware things which would be remembered until power off (or the program is run again).

TT-RAM might not need to be one of those as I misdiagnosed it in the first place, but for the cost of one register, why not? Heck could even have slow mode and no onboard ROM options I had on DFB1 if you were so minded. Might be very useful for the present debugging too.

I could probably hack to you together a simple text-based configuration tool if it'd help.

BW

[Badwolf]

Do you really need to speed up the rom access? I use maprom usually. BTW, am sure on the Amiga that the PLD used to copy the rom to fast ram, so may be worth pinching that code?

I have often needled @exxos for his ROM speed obsession.

I do think it's unneeded for the most part as most accelerator users will soft load large chunks of the OS and almost always the VDI anyway.

BW

[exxos]

@Badwolf yeah a "turn booster off" to retain some backwards compatibility makes sense. A register can be done no problem. Just need to get it all stable first

[exxos]

M'eh!

It crashed several times all at once!!

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[exxos]

Fast-ROM attempt 67million...

A round and round she goes,where she stops, nobody knows, but probably around five passes

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[PhilC]

Are you sure its not a dodgy CPU?

[exxos]

Are you sure its not a dodgy CPU?

Dunno... works fine without fast rom...

[PhilC]

I'd maybe try swapping it? I've had some odd stuff when I was doing the TF536s with dodgy CPUs

[exxos]

I'd maybe try swapping it? I've had some odd stuff when I was doing the TF536s with dodgy CPUs

I get the same issues on 2 boards though.

[PhilC]

I'd maybe try swapping it? I've had some odd stuff when I was doing the TF536s with dodgy CPUs

I get the same issues on 2 boards though.

Oh I thought it was just Steve;s one playing up still?