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Disk BIOS Speed

by PingPong on 12-01-2022, 23:13
Score: 166.96 %, Type: Forum topic , Comments: 3 comments
slower seek (mostly older), most use fastest seek Some have faster page 0 transfers (not using ... page0/page1 transfers Some have interrupts disabled longer Some have shorter motor spinup wait time Some ...

MSX and VRAM access speed: Is really so bad? what do you think?

by PingPong on 10-01-2022, 20:38
Score: 166.95 %, Type: Forum topic , Comments: 5 comments
write (not page 0 ) takes 3 cycles. So 3us. The same ballpark of a z80 in msx (you need also ... on average to be 2-3 cycles, so 0.5 to 1us leading to a LD a,(HL) requiring 9-10 t-states. - amstrad CPC ... in a operation like "OR 0x40". gdx wrote: And finally, the graphics commands are quite ...

if it's not a fake this is the most impressive PCM sound i've heard using the PSG

by PingPong on 08-01-2022, 15:15
Score: 166.86 %, Type: Forum topic , Comments: 13 comments
https://www.youtube.com/watch?v=ymFMhIbrDpw Well, it is 512 KB for 30 sec Well, it is 512 KB for 30 sec of recording. I think it is doable. I remember a program I've found on a magazine (in its cassette) when I was young... ehm, ...

TO Grauw (and others, of course): YASVL

by PingPong on 04-01-2022, 01:41
Score: 166.68 %, Type: Forum topic , Comments: 19 comments
when working, for example in screen 5, leaving page 0-1 free from sprite data. I think this behaviour ... to be on the lower 64K it's my responsability to keep them 0. By contrast, by forcing them to be 0 you remove me ...

Help: Screen 4 Wrong SAT Address?

by PingPong on 03-01-2022, 21:14
Score: 166.74 %, Type: Forum topic , Comments: 5 comments
Hi, all. when the VDP is set in screen 4 the r5 is set to 63 (dec) while the r11 to 0. If ... however the address is not correct: putting a sprite on plane 0 at 10,20 should show byte value 20 @ 8064 ... to 63 (dec) while the r11 to 0. If i've done the math correctly this should mean ...

openMSX "sprite rivelator"

by PingPong on 01-01-2022, 23:45
Score: 166.68 %, Type: Forum topic , Comments: 24 comments
but should be the base SAT address.... FOR T=0 To 31 y=vpeek(BASEADDR+T*4) x=vpeek(BASEADDR+1+T*4) line ... namespace eval sprite_locator { variable sprite_locator_enabled false variable sprite_locator_after_id 0 ... set sprite_locator_enabled true osd_widgets::msx_init sprite_locator for {set i 0} {$i < 32} ...

See this

by PingPong on 01-01-2022, 12:12
Score: 166.67 %, Type: Forum topic , Comments: 4 comments
https://www.youtube.com/watch?v=I6nPqgR0PK8 Would be interesting to have on msx1 or 2 maybe with "ARTRAG's PSG sound" ...
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