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TMS VDP timing testing
Score: 124.83 %,
Type: Forum topic , Comments: 34 comments
needed in the Yamaha's V9938.
Apparently even in VBLANK, V9938 and V9958 need more time to fetch ... is due to vdp timing. if we check the V9938 VRAM timings in vblank there is an access slot every 8 clock ... the v9938 is much faster than TMS when performing cpu I/O. So the difference must be in the initial delay ...
TMS9918 designer
Score: 142.85 %,
Type: Forum topic , Comments: 2 comments
and 6502 were both used with the 9918). Ascii Microsoft came out with the V9938 what was developed ... and the DRAMs had gotten faster.
Compare the V9938 ( ... Microsoft came out with the V9938 what was developed by Yamaha and my understanding is a slightly customized ...
TMS9918 sprite fetch timing
Score: 113.33 %,
Type: Forum topic , Comments: 20 comments
the camera.
As for 228, check appendix 7 of the V9938 application manual, it quotes 1368 cycles per ... be 227.5.
Grauw wrote:
As for 228,
Grauw wrote:
As for 228, check appendix 7 of the V9938 ... this was the source of confusion: TMS9918 does not have line interrupts, it’s a V9938 and up feature. On the TMS9918 ...
TMS9918 weirdness!
Score: 86.15 %,
Type: Forum topic , Comments: 34 comments
Therefore, no visible effects on MSX2 or higher computers, with V9938 or V9958.
Pitpan - would you mind ... even, that on v9938, which handles different amounts of VRAM, this bit doesn’t do anything anymore. ... 'feature' disappeared on the V9938. Other than this VDP register bit, there were some other tiny changes ...
TMS9918A scr2 "hybrid" mode
Score: 98.7 %,
Type: Forum topic , Comments: 7 comments
TMS aren't MSX compatibile.
In V9938 those modes work correctly, like in the good TMS ... to 1. And if you do otherwise, you probably create an incompatibilty with MSX2 (V9938) and higher. ...
TMS9929A Video Chip query
Score: 83.27 %,
Type: Forum topic , Comments: 32 comments
on screen mode. Not sure about MSX1 videochips on that one, but pretty sure that's true for the V9938 / ... on the V9938 and V9990, for example---and a program may rely on this behaviour.
Well, crystal is fine ... cousins (V9938/V9958) with their 'flat' bitmap modes
Hey RT,
Thanks again for your help, ...
Toshiba FS-TM1
Score: 127.21 %,
Type: wiki , Comments: 0 comments
Launch price
RAM 64kB in slot 3-0
VRAM 128kB
Media MSX cartridges
Video Yamaha V9938 ...
TOSHIBA FS-TM1 RGB PINOUT
Score: 101.56 %,
Type: Forum topic , Comments: 22 comments
BUI8400A-PS (Z80A)
RAM: 64KB
ROM: 48KB
VDP: V9938
VRAM: 128KB
Sound : YM2149 (PSG ... without the FDC and with a completely different video output circuit (V9938 main clock is PLL based). ...
Toshiba HX 22
Score: 85.71 %,
Type: Forum topic , Comments: 49 comments
a TMS9918 compatible (or V9938 etc), and that it's addressed through I/O ports 98/99h. From there on, ...
Toshiba HX-10 black/white image on Philips flatTV
Score: 97.58 %,
Type: Forum topic , Comments: 20 comments
and I'm unaware of it.
I think I'll have it replaced with a V9938 and make it work in 60hz/RGB ...
