I just wonder. What kind of numbers people will get on different machines when running this benchmark tool I found on the net.
I get 146000 on the first test on my nms8255 machine (V9958)
Strange is that most of the numbers I read on the net basicly point out that the VDP runs about 4-8% slower on MSX2+ and turbo-R machines. I wonder if this is true. I also wonder if there is a difference between V9958 and V9938.
So this test is basicly unreliable? It doesn't disable ints so you will get wierd results if the machines are different. The sourcecode was supplied with the program. Lets see if we can disable the ints.
EDIT: the program has custom int handler so extensions cannot change results.
Quote:
Quick tests made on blueMSX with boosted generic machines under DOS1 :
MSX 2 European - test 1 : 146136 - test 2 : 94588 - test 3 : 8694 - test 4 : 30996 - test 5 : 22476 - test 6 : 10782
MSX2 Japanese - test 1 : 122217 - test 2 : 79093 - test 3 : 7284 - test 4 : 25919 - test 5 : 18830 - test 6 : 9033
MSX2+ Japanese and TurboR Japanese - test 1 : 120155 - test 2 : 77711 - test 3 : 6917 - test 4 : 25009 - test 5 : 18049 - test 6 : 8848
interesting. I guess the T9769 inserts some extra wait states?
Daemos : I don't remember exactly the cause, but Daniel Vik, when he was making some very special MSX1 demos, had indicated me that the compatibility was actually broken on MSX2+/turboR for some parts of these demos using special VDP tricks. That 's why these parts are skipped on MSX2+/turboR.
The benchmark names sound like doing blitter.
But I rather see it doing cpu. as filename "port 98" is saying.
Then there is no possibility that VDP slows down the cpu.
Except that 9958 WAIT feature was enabled.
But that would have no meaning to games performance. And no meaning to bios performance.
