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rfka01 #78848 05/07/12 12:02 PM
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Duke: Yes, but there's no interrupt pin.

rfka01 #78849 05/07/12 12:22 PM
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Yeah, because there is none on the 8251.



According to the technical manual RXRDY and TXRDY are connected to the 8088 interrupts.

rfka01 #78852 05/07/12 12:43 PM
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Ahh. That's handy then.

R. Belmont #78884 05/08/12 05:45 PM
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Try pressing F3 at that stage ... that key is equivalent to "SetUp" on a real Rainbow and enters a special mode during normal operation.

Here it shows



NCR DMV- DEC Rainbow- Siemens PCD- ITT 3030-Oly People- Acorn A5000- Olivetti M20
rfka01 #79273 05/18/12 08:50 AM
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Isn't that the place where some basic settings like serial bit rate, video inversion etc. can be made?

Don't have my DEC 100B right next to me to check, i only remember that mainly periperals were involved.

EDIT: the procedure is described on pages 37 - 52 of the Technical Manual mentioned earlier in this thread

ftp://ftp.update.uu.se/pub/rainbow/doc/rainbow-docs/pc100tm1.pdf

Originally Posted By rfka01
Try pressing F3 at that stage ... that key is equivalent to "SetUp" on a real Rainbow and enters a special mode during normal operation.

Here it shows


Last edited by Bavarese; 05/18/12 09:47 AM.
rfka01 #79456 05/22/12 09:25 PM
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I've taken apart a few machines to send ICs to a guy who'll try to read as many of them as possible.

I've used this opportunity to take a few more pictures, and in some cases re-read eproms.

Here are some pictures of the NCR DMV's keyboard

DMV Keyboard

Here are pictures and the ROMs of the Siemens PC-D's keyboard and harddisk controller

PC-D HD and keyboard

I'll add the rest when I get the results from this reading frenzy :-)

Robert


NCR DMV- DEC Rainbow- Siemens PCD- ITT 3030-Oly People- Acorn A5000- Olivetti M20
rfka01 #79460 05/22/12 10:33 PM
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What are the markings on the keyboard CPU? It's not quite legible in the picture.

rfka01 #79461 05/22/12 10:50 PM
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For the DMV, the big IC reads 006-00595 14 Motorola 8328

The Siemens PC-D has a Philips IC MAB 8035HL 6D8 DND 418 V1Y



NCR DMV- DEC Rainbow- Siemens PCD- ITT 3030-Oly People- Acorn A5000- Olivetti M20
rfka01 #79462 05/22/12 10:51 PM
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Sorry, I should have specified I meant the PC-D smile Thanks for listing both anyway!

R. Belmont #79483 05/23/12 01:09 PM
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It's quite sad: the diagnostic LEDs on my Rainbow show error 19 (0-64 K RAM failure on motherboard), and the VR201 monitor went up in black smoke - so i can't see anything.
Keyclicks are audible, though.

As i'd like to contribute: do we need additional ROM dumps or motherboard photographs of the DEC-100B - or it's extension cards?

It's revision 2 or 3 (sorry, the label is barely readable) with a German language rom and optional hard disc.

Addon boards in my system:
1) RD51 extension board (= floppy controller board?),
2) Ram expansion (with 4 DIP switches)
3) MIO card (= winchester addon card?)




Last edited by Bavarese; 05/23/12 01:48 PM.
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