Author
| MSX Prototype of Kay Nishi given to Luc Sala
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manuel
msx guru
Posts: 3545 |  Posted: October 07 2007, 20:53 |
Did someone notice this: (I found the item on MSX Posse)
http://www.digibarn.com/collections/games/msx-prototype/index.html
I submitted the following comment:
This seems to be a prototype of a Yamaha MSX2. The motherboard says YIS-604 and CX7(M).
MSX2 was released in 1985, so it must be earlier than that. MSX(1) machines got released in 1983, so I guess it is from around that time, around 1984.
The photo http://www.digibarn.com/collections/games/msx-prototype/CIMG9421.JPG shows that the machine has an S-3527 MSX-ENGINE (called MSX-SYSTEM in Japan). This is the first attempt to put a whole computer on one chip. (A few years ago made reality by release of the 1-chip-MSX, with a whole MSX in an FPGA...) More info about this on Wikipedia, also on the Japanese Wikipedia. |
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AuroraMSX
msx master
Posts: 1262 | Posted: October 07 2007, 21:41 |
Very cool pictures  |
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Sd-Snatcher
msx freak
Posts: 255 | Posted: October 07 2007, 21:49 |
Only looks like an unCASEd msx mounted on a metal plate.
Can't see any temporal cabling or anything that look like a prototype.
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Pentarou
msx user
Posts: 33 | Posted: October 07 2007, 22:29 |
One of the Eproms has a date code of the 8th week of 1985, so it is impossible that this prototype was built before that date.
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manuel
msx guru
Posts: 3545 | Posted: October 08 2007, 09:18 |
Ah, great info! So, it really is a typical MSX2 prototype from around 1985!
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Jipe
msx freak
Posts: 205 | Posted: October 08 2007, 14:55 |
it's a joke
just a CX5MII in a metal box with MSX2 eprom
the keybaord is also CX5MII part
a prototype have not a very nice board but some wire and sold for adjust error
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manuel
msx guru
Posts: 3545 | Posted: October 08 2007, 16:36 |
The PCB of the mainboard says YIS 604, CX 7, CX 7M.... definately MSX2.
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Jipe
msx freak
Posts: 205 | Posted: October 08 2007, 17:54 |
yes and is also the PCB of CX5MII
look at Hans Otten page the Manual of this MSX
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