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Joined: Mar 2001
Posts: 17,070 Likes: 143
Very Senior Member
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Very Senior Member
Joined: Mar 2001
Posts: 17,070 Likes: 143 |
Duke: Yes, but there's no interrupt pin.
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Joined: May 2004
Posts: 979 Likes: 58
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Senior Member
Joined: May 2004
Posts: 979 Likes: 58 |
Yeah, because there is none on the 8251.  According to the technical manual RXRDY and TXRDY are connected to the 8088 interrupts.
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Joined: Mar 2001
Posts: 17,070 Likes: 143
Very Senior Member
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Very Senior Member
Joined: Mar 2001
Posts: 17,070 Likes: 143 |
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Joined: Jan 2012
Posts: 1,179 Likes: 16
Very Senior Member
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OP
Very Senior Member
Joined: Jan 2012
Posts: 1,179 Likes: 16 |
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
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Joined: Apr 2012
Posts: 193
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Senior Member
Joined: Apr 2012
Posts: 193 |
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.pdfTry 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.
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Joined: Jan 2012
Posts: 1,179 Likes: 16
Very Senior Member
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OP
Very Senior Member
Joined: Jan 2012
Posts: 1,179 Likes: 16 |
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
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Joined: Mar 2001
Posts: 17,070 Likes: 143
Very Senior Member
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Very Senior Member
Joined: Mar 2001
Posts: 17,070 Likes: 143 |
What are the markings on the keyboard CPU? It's not quite legible in the picture.
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Joined: Jan 2012
Posts: 1,179 Likes: 16
Very Senior Member
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OP
Very Senior Member
Joined: Jan 2012
Posts: 1,179 Likes: 16 |
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
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Joined: Mar 2001
Posts: 17,070 Likes: 143
Very Senior Member
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Very Senior Member
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Posts: 17,070 Likes: 143 |
Sorry, I should have specified I meant the PC-D  Thanks for listing both anyway!
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Joined: Apr 2012
Posts: 193
Senior Member
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Senior Member
Joined: Apr 2012
Posts: 193 |
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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