GadgetUK164 wrote:Nice progress! I wonder if we can get PP to take a look here, he might be able to shed some light.
AtariZoll wrote:As I see, TOS ROM is selected by own logic, instead slow Glue. But Glue still generates DTACK when TOS ROM is accessed - what may cause problems. Override of it is using TOS 2.06 on different address space.
I will code some simple ROM access speed SW - based on using movem - then RAM speed should have minimal influence.
AtariZoll wrote:So, ROM really runs at 16 MHz. At least most of time.
With this test speed gain on Gagdet's machine will be minimal, max some 20% - as said most time is ROM read.
AtariZoll wrote:Here is simple test prg:
At 8 MHz it shows 212 . Should show about 120 when TOS ROM is accessed with 16 MHz CPU speed. 85% of testing time is pure ROM read . For TOS 2.06 - accessing area at $E00200 . On Mega STE at 16 MHz shows 104, but it caches RAM and ROM too, so it's all with full speed.
GadgetUK164 wrote:Here's that app running on mine:-
I tried PP's util there but I just get a flashing cursor and then it returns to GEM? Could it be due to TOS 1.04?
I did all tests on that other benchmark prog (seperately), excluding the RPM test as that was hanging.
EDIT: I attribute those higher readings I got to the Blitter, and the 64Kb DMA is probably the Ultra Satan.
qq1975b wrote:maybe a silly question...but is it useful yo compare it against an Atari Mega Ste at 16MHZ?
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