Author
| Turbo 7 MHz is coming again
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Repair-Bas
msx addict
Posts: 380 |  Posted: April 08 2007, 12:12 |
I found some parts to built 7 MHz prints.
So I hope in a few months to have aprox 20 prints.
I'll let you know when I have information
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mouser
msx lover
Posts: 89 | Posted: May 06 2007, 23:35 |
What is this Turbo 7 mhz ? A kit to double the clock frequency or an expansion board containing a different processor ? Excuse me if this is a trivial question, but I am not very familiar with the upgrades an expansions post 1990.
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nikodr
msx addict
Posts: 449 | Posted: May 07 2007, 00:56 |
is it possible to upgrade an msx2+ to a turbo r model?I am thinking of upgrading my msx2 to a msx2+ model change all needed stuff and the chipset v9938 to v9958 but i think i would like it if my msx could be turbo r too ,is it possible to fit a r800 to an ordinary msx2+ ?
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[D-Tail]
msx guru
Posts: 2989 | Posted: May 07 2007, 01:07 |
Hehe, wouldn't that be nice? But no, to my knowledge, you'd still miss some important parts; the S1990 (with the Z80 built-in), different memory structure, so I suggest you'd go for some eBay auction  |
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Etaoin
msx novice
Posts: 32 | Posted: May 07 2007, 07:51 |
Quote:
| What is this Turbo 7 mhz ? A kit to double the clock frequency or an expansion board containing a different processor ? Excuse me if this is a trivial question, but I am not very familiar with the upgrades an expansions post 1990.
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I have schematics of a 6 MHz board that are from 1989, so that should be old enough for you to be familiar with It's probably similar to that. My guess is that 6 MHz was as fast as any Z80B would go in 1989.
By the way, that only contains three easily obtainable 74LSxx chips that shouldn't take months to source ($0.84 for the three from Futurlec).
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msd
msx professional
Posts: 606 | Posted: May 07 2007, 09:35 |
@D-tail: The s1990 doesn't have a build in z80. That's in the T9769
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mohai
msx lover
Posts: 118 | Posted: May 09 2007, 15:17 |
I have schematics of a 6 MHz board that are from 1989, so that should be old enough for you to be familiar with It's probably similar to that. My guess is that 6 MHz was as fast as any Z80B would go in 1989.
By the way, that only contains three easily obtainable 74LSxx chips that shouldn't take months to source ($0.84 for the three from Futurlec).
[/quote]
Could you post the schematics somewhere?
Maybe send them to Hansotten. |
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