wie bouwt nog fm music in msx computers. is het mogelijk om fm music chip in te bouwen in msx 2 nms 8250?

zijn er nog mensen die nog msx2+ ombouw doen en 7 mhz, en dos 2.20?? en geheugen uitbreidingen?

Please post in English next time as this is an international forum.

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Are there any people doing internal MSX-MUSIC in MSX computers? Is it possible to do this in a Philips NMS 8250?

Are there any people expanding MSX 2 computers to MSX 2+, Turbo 7 MHz, MSX-DOS 2.20 and memory expansions?
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[reply]
You might want to contact Bas Kornalijnslijper or wait for his reply on this post (his nickname on MRC is Repair_Bas) to do some of these hardware modifications. For some modifications you might need to provide him with some of the components. Turbo 7 MHz is quite hard to get these days.
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I really don't know anyone that still commercially turns msx2 into msx2+ machines. First of all: most components (e.g. the videochip) is expensive and or hard to find. Second: it really takes a lot of time to build those expansions into an existing MSX. The costs of finding those parts you need, and the hours of labour you have to pay to get it into your MSX are about 4-5 times the amount of money you need to just buy such an expanded system secondhand.

When an MSX2 costed about 600 euro, a videochip 100 euro and people soldering for a couple of hours thought this was fun to do (10 years ago), YES!
But nowadays: I don't think so.

perhaps it's easier to get some slotexpander .. you still need the fm-pac and other stuff as a cart. etc. but you don't need to build it into your msx..

Like sander says, I've seen '2+' jobs on fairs for less than 100 euros. Usually they're 8250's with V9958, 7Mhz and a PAC built in. If you're lucky it'll even come with 256 or 512kB internal memory...

msx chips wanted:

- MSX-2+ VDP (V9958) (2 pieces)
Included MSX Basic 3.0 en F4 register.

- 7 mhz kit (2 pieces)
Z8581 7 MHz or
Z8581 10 MHz (Z0858110PSC chip)

- FM music Yamaha YM2413 chip (2 pieces)

Hans Oranje might do it for you too...

hans oranje doesnt have on stock. we have more alternates where we can buy chips?

Every once in a while someone turns up who has one or more of those chips for sale, but you'll usually have to wait for it. On one of those occasions I bought myself two v9958's, one is in my computer and another is in a friend of mine's nowadays. Btw, 7MHz Z80 chips shouldn't be much of a problem to find, I think...

~Grauw

7MHz Z-80: Use the Z-80H. It's the army edition I believe, which can handle frequencies up to about 10MHz. So it should be safe. Don't use the Z-80B, as it's only safe up to 6MHz (so it sometimes works on 7MHz (though very hot) and sometimes it doesn't).

LOL, army edition Gotta love rumours
Z80H is just the (h)igh-speed version.
Ofcourse these names have little or no meaning today, as Z80's are available up to 20MHz.

As for a Zilog CPU that did have a military edition, that was the Z8000 (16/32 bit RISC processor) of which the military version was radiation-proof.

uuuuuhhhh... I said 'I believe'. Now I don't, of course

IIRC Z-80H is the military edition, cos it also had a better operating/storage temperature. And it has a better voltage toleration. Hence

How about the ~8MHz Z80H upgrade from Alwin Henseler btw?

Quote:

uuuuuhhhh... I said 'I believe'. Now I don't, of course IIRC Z-80H is the military edition, cos it also had a better operating/storage temperature. And it has a better voltage toleration. Hence

http://www.cpu-museum.com/z80_e.htm
The Zilog M38510/48001BQC was the military version of the Z80.

Why don't you just try and see if you can get a Japanese MSX2+ with internal FM-chip somewhere? A Turbo R might be a little bit hard to find, but iirc Rklok sold such 2+'s at the fair in Tilburg...