Wanted: Eur MSX1 with Toshiba VDP (eg. Sony HB10/20)

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Por hap

Paragon (2020)

Imagen del hap

10-02-2009, 16:19

I'm not trading or collecting, this is for a (subjective) good cause: reverse engineering this chip so emulators can add support for it. It won't be collecting dust in my attic. Anyone willing to sell one for a sane price? like, 20 euros + shipping. If power/video connectors are non-standard, I'd need cables too. I don't need a box or manual.

Quick test to confirm it's got the Toshiba T6950:

10 color15,4,1:screen2:vdp(3)=159:vdp(4)=0
20 line(50,30)-(200,50),15,bf: rem if you see only ONE horizontal white bar, it's a Toshiba
30 goto30
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Por Jazzy

Champion (471)

Imagen del Jazzy

10-02-2009, 18:52

Are you the guy who bought my turbo R in Nijmegen?

Por hap

Paragon (2020)

Imagen del hap

10-02-2009, 19:18

Yeah Smile .. Maybe one of your leftover European MSX1s has a Toshiba T6950 VDP: it wasn't just used in Sony HB10/20, you're willing to test? Also, I've read that (some?) Gradiente Expert contain a Toshiba T7937A, so, there's possibly 2 of your MSXes I might be interested in.

shorter version of the test:

screen2:vdp(3)=159:vdp(4)=0:line(33,33)-(99,55),15,bf:?input$(1)

*edit*
A list of your MSX1s that manuel and I tested at Nijmegen that did not have a Toshiba VDP:
- Spectravideo SVI-728
- Sony HB75
- Yamaha YIS 503F
- Yamaha CX5M
- Sanyo PHC-28S
- Sanyo PHC-28L
- Talent DPC-200
- Epcom HB-8000

Por Moniz

Champion (340)

Imagen del Moniz

10-02-2009, 20:32

Add the Canon v-20, it showed 3 lines

Por Mortimer

Supporter (10)

Imagen del Mortimer

11-02-2009, 23:27

I've just run the test script in my Toshiba HX-20 and it's shows only one line. And, I can confirm that inside it has the 'compatible' toshiba VDP because I've seen it Wink

I think that HX-10 also has the Thoshiba chip, and I've found this Item: eBay

If you need some help with Spanish email me!

Good luck.

{mod: whatever}

Por hap

Paragon (2020)

Imagen del hap

11-02-2009, 23:56

Yeah, the HX-20 has a T6950, it's a rare machine though. The more common HX-10 has a standard TMS9xxx.

Por Mortimer

Supporter (10)

Imagen del Mortimer

12-02-2009, 00:21

Oh, if I see another HX-20 or HB in your bullet I'll notice you.

Casually I'm working too in an Java TMS Emulator: http://msx.sagaz.es/TMS9918A.002.php
If you need to probe some code in the toshiba or yo have any question email me ;)

Por Jazzy

Champion (471)

Imagen del Jazzy

23-02-2009, 12:41

Hap, I ran the test on the Sony HB-20 and it displayed 3 horizontal bars.

Por hap

Paragon (2020)

Imagen del hap

23-02-2009, 12:55

Ok, thanks for testing it (no need to answer my question about the HB20 on ebay then).
If you find time to test your other MSXes, let me know here. Smile

Por Jazzy

Champion (471)

Imagen del Jazzy

23-02-2009, 13:06

Keep hammering my e-mail with questions and maybe I find the time then. Smile

Just give me 3 or 4 types you want me to check and I will do that today. By the way, you're welcome to visit me and do all the testing you want.

Por hap

Paragon (2020)

Imagen del hap

23-02-2009, 13:41

- Daewoo DPC-200
- Mitshubishi ML-F80
- Goldstar FC-200 (black one)
- Sanyo MPC-100 (the one on eBay)
If you said 6 types, I'd add the JVC and the other Goldstar too. Wink

Some Arab MSXes are known to have a Toshiba VDP too, same for the Gradiente Expert stuff, but I don't think you'll sell those for a small price?

*edit* a 'positive' result for that VDP test is 1 horizontal bar btw. 3 means it's a TMS VDP.

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