Ragstaff wrote:We are very lucky to have someone like yourself, exxos, still making things like this. Very cool.
Ragstaff wrote:Not to derail your thread, but it may be vaguely related - could/would it be possible and worthwhile to put a DSP on an ST accelerator card, mapped to the same addresses as the 56001 on the Falcon? I remember some years ago seeing that they were extremely cheap. Like, $5.50 each when bought in quantities of 1000 from Freescale... I forget the exact chip except that it was a later, faster model than the 56001, but supposedly fully compatible. This may have even been for the 96002. The only catch was that it came in BGA packaging, the PGA version was much more expensive.
What would the use be for this? Obviously there isn't going to be a whole new load of ST software written to take advantage of a DSP! But I thought it might increase compatibility with the Falcon, maybe some Falcon software that runs with ST video modes might run on an ST if it has a DSP. If the hardware was cheap it might be interesting to have it there on a booster board like this, however I appreciate the effort to put it on and get it working might not be "cheap". Any thoughts on this?
DarkLord wrote:Okay, got some sleep, attended my daughters "Young Authors - Christmas through the eyes of a
child" awards ceremony (she was a school winner), grabbed a quick nap, back up, Atari stuff!
Downloaded Gembench 5, read through your notes, looks good. Seems to run fine on my Pak 68/3
equipped STacy. Results seem...really good compared to GB3 and 4. Here is a pictures (sorry for
the low quality - cellphone):
Interesting results. Whatcha think?
EDIT: Forgot to mention, have to double-check but I believe I had NVDI running.
DarkLord wrote:Ah, just did a fast check, was afraid of this. The cache on the Pak 68/3 is controlled by a jumper
on board, not software. So I'd have to take my STacy apart to disable the cache, as far as I know.
STacy's are not fun to take apart.
If in the near future I take that sucker apart again (for example, to replace the current Ultrasatan
with the CosmosEX I bought), then I'll run GB5 on it again with the cache disabled.
rpineau wrote:You can disable both cache on the 68030 with:
I can probably write a quick asm prog to do this.
DarkLord wrote:Okay, downloaded both those - give me a bit and I'll report back what happens.
@ Chris - If I were you I'd be pretty pleased with your boards results vs my Pak
, considering no cache and mine is clocked faster.
DarkLord wrote:Okay, well then, maybe my machine is not so stable.
I've been sitting here running GB5 on the STacy over
and over. Not going to post xxx pics so the long and
short of it is, with NVDI disabled and running the
CACHEOFF.PRG, I'm getting an "average" of 1200 to
1400 percent. It is holding steady in that range but
it does vary each time, back and forth, in that same
Do you think that means there is a problem somewhere?
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