alexh wrote:The Apollo team are supposed to be working with an Atari owner to make Vampire 500 work in ST(fm). Also the TF530 is being developed to work on Atari ST(fm).
The ST must have a socketted DIL 68000
Foxie wrote:I really wish those accelerators would include a little bit of fast RAM too.
joska wrote:2. Overclocked CPU and overclocked ST-RAM. Fast, good option if you want to accelerate games. Not many types of games for the ST where this makes sense though. Also, such an accelerator is complicated to install and speed increase is limited compared to (1) as you can't overclock the ST bus nearly as much as dedicated fast-RAM.
troed wrote:Since I've recently done this, I can add a bit more detail:
Foxie wrote:I also wonder if anyone has designed a modern accelerator based around the 25MHz 68EC030 seeing as they still make them and they're available cheaply.
rpineau wrote:Are you sure about this as I haven't found any source for 68030 or 68EC030. NXP marked all of these as no longer manufactured.
matej wrote:Buy Amiga 500 turbocard Terrible Firre 530 put one wire on Glue chip.Buy FPU.You will have 40mhz 68030+FPU...2MB ram.When someone will adapt IDE so IDE too.
troed wrote:2) Requires new RAM, new TOS, new CPU ...
Foxie wrote:I wonder if Exxos' accelerators can be modded to install some SRAM alongside the TOS? The address decoding might need changing.
Foxie wrote:I don't think very much fast RAM is needed. Even less than 1MB would hold a lot of software (though since I have 512K 8 bit SRAM chips sitting around, I may as well use a couple of those)
rpineau wrote:Any idea if ISA video cards will continue to work after the Mega is overclocked to 16MHz? If they can handle 16MHz, that could provide a useful screen redraw speed boost!
matej wrote:TerribleFire530 cost 100-200Euro on Amiga forums/AmiBay...Its OpenSource but you need microscope to build it (very tiny smd parts).
joska wrote:You would soon regret adding so little extra RAM. Go for 8Mb right away, price is not bad at all.
rpineau wrote:They do, atleast the ET4000 I have tested. The increase in redraw speed is minimal. And yes, the ET4000 was accessed at double speed.
joska wrote:Foxie wrote:I really wish those accelerators would include a little bit of fast RAM too.
4. Overclocked 68000 without cache. Very limited use, speed increase almost not noticeable in real life. I removed mine, because it caused timing problems with other hardware expansions (MonSTer and Reflex graphics card) which wasn't worth the modest speed increase.
Foxie wrote:That's strange, I wonder why it wasn't 2x the speed? Is there some bottleneck in TOS/GEM which ties redraws to the vertical blank or similar?
christos wrote:Of course having cache or faster bus will increase speed by a lot.
There are other accelerators with faster CPU's (020 and 030), I have no real experience with them. However, it's clear that compatibility suffers compared to a 68000 accelerator, unless there's a possibility to fall back to the original CPU. No problem if you don't play games though. If you're a "serious" user then these types of accelerators are probably the best choice. The Vampire - if it ever arrives for an Atari - would fall into this category.
DarkLord wrote:Surprisingly, I've found very few compatibility issues with the Pak 68/3 board installed in my STacy. Probably that's because
we've seen so many games "adapted" for hard drive use and more. Using these, I've found only a handful that would not work.
DarkLord wrote:Just my opinion, but I think every accelerator setup should have an option to allow the ST to act like a base model again.
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