Author
| Video memory type used with V9990
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CHRV
msx friend
Posts: 4 |  Posted: October 05 2005, 19:08 |
Anybody please help me!
What parts of VRAM (multiport DRAM) used with v9990 videoprocessor?
If exist electrical scheme, please write me!
Thanks!
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HansO
msx addict
Posts: 375 | Posted: October 05 2005, 21:00 |
Quote:
| Anybody please help me!
What parts of VRAM (multiport DRAM) used with v9990 videoprocessor?
If exist electrical scheme, please write me!
Thanks!
|
Have a look at the v9990 application manual on my site http://www.hansotten.com - MSX Computers Info - MSX ICs |
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dhau
msx master
Posts: 1047 | Posted: October 05 2005, 22:47 |
Hi CHRV,
I'll make high resolution shots of my GFX9000 PCB and make them apailable for you.
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CHRV
msx friend
Posts: 4 | Posted: October 06 2005, 20:30 |
Hardware MSX sites content only scanned application manual for v9990 (4.7Mb). I can't find real datasheet of v9990 on net. I interest for hardware design datasheet or scheme of devboard!
Thanks.
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CHRV
msx friend
Posts: 4 | Posted: October 06 2005, 20:32 |
Adrian, I wait for it  |
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dhau
msx master
Posts: 1047 | Posted: October 09 2005, 02:54 |
Here we go:
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dhau
msx master
Posts: 1047 | Posted: October 09 2005, 03:00 |
And just in case, here is the memory chips close-up:
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msd
msx professional
Posts: 607 | Posted: October 09 2005, 05:05 |
he where are does extra wires for? Extra grounding?
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CHRV
msx friend
Posts: 4 | Posted: October 09 2005, 15:30 |
ОК! Adrian, my greatest thanks for You.
May be anybody had datasheet or pinout of next cheeps:
M5M442256 (Mitsubishi), KM424C256(Samsung), MT424C256...?
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dhau
msx master
Posts: 1047 | Posted: October 09 2005, 16:54 |
CHRV, I think forum member sunrise can help you. They made GFX9000. Just make sure he is aware that you are building expansion for ZX Spectrum, since he may get a wrong idea that you're trying to build MSX device and compete with msx.ch  |
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dhau
msx master
Posts: 1047 | Posted: October 09 2005, 16:55 |
Quote:
| he where are does extra wires for? Extra grounding?
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No idea, I got is like this from USA |
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