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Welcome to the forum for
adwaterandstir.com
, home of the Altair-duino!
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Tom Lake
, …
Chris Davis
4
May 26
Full-Sized 680?
Yeah I thought they would work for that. On Tuesday, May 26, 2026 at 9:42:01 AM UTC-5 John Galt wrote
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Full-Sized 680?
Yeah I thought they would work for that. On Tuesday, May 26, 2026 at 9:42:01 AM UTC-5 John Galt wrote
May 26
Greg Jewett
, …
HAL 9000
4
May 24
Blinkenlights! :)
I know this is pretty late, but I was visiting for the first time in a few years. I wrote a couple
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Blinkenlights! :)
I know this is pretty late, but I was visiting for the first time in a few years. I wrote a couple
May 24
John Galt
, …
Altair Computer
19
May 23
Super Sprint! for Altair-Duino with Dazzler
No, because the Interrupt required for keyboard polling is too slow. The dazzler joysticks can
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Super Sprint! for Altair-Duino with Dazzler
No, because the Interrupt required for keyboard polling is too slow. The dazzler joysticks can
May 23
Jim Edgell
, …
John Galt
11
May 21
ESP-01 Turns off after Ardinu Rebuild
most likely the issue is with Ubuntu. You may have CR and LF set different in Kermit verse the
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ESP-01 Turns off after Ardinu Rebuild
most likely the issue is with Ubuntu. You may have CR and LF set different in Kermit verse the
May 21
Antonio Tamairón
,
Walt Perko
3
May 19
VDM-1 with Altair 8800 simulator
Hi, I've been running one of my Altair-Duino Pro computers as a Processor Technology Subsystem B/
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VDM-1 with Altair 8800 simulator
Hi, I've been running one of my Altair-Duino Pro computers as a Processor Technology Subsystem B/
May 19
Paul Hatchman
, …
Walt Perko
45
May 16
New version of altairdsk available
That version, or anything called altairdsk.exe, is a command line application. Sou need to run it
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New version of altairdsk available
That version, or anything called altairdsk.exe, is a command line application. Sou need to run it
May 16
bob olbrich
, …
Jim Edgell
5
May 14
Wyse terminal setup
I have a Wyse WY-160 and I got it working. The serial port on my AD seems to be pre wired as a null
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Wyse terminal setup
I have a Wyse WY-160 and I got it working. The serial port on my AD seems to be pre wired as a null
May 14
Tom Lake
, …
Walt Perko
5
May 7
OP-80a Paper Tape Reader Question
Hi, BTW, I found a V2 manual for the OP-80A ... find it attached. . On Thursday, May 7, 2026 at 12:36
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OP-80a Paper Tape Reader Question
Hi, BTW, I found a V2 manual for the OP-80A ... find it attached. . On Thursday, May 7, 2026 at 12:36
May 7
Peter Rittwage
, …
Chris Davis
14
Apr 21
Older AltairDuino, newer firmware. Problem with SD Card.
Yeah, it's not a big deal. I went through the procedure to build it and upload with the Arduino
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Older AltairDuino, newer firmware. Problem with SD Card.
Yeah, it's not a big deal. I went through the procedure to build it and upload with the Arduino
Apr 21
Stephen Jones
,
Chris Davis
4
Apr 17
Geoff Graham's VT100 emulator
The SD card, SW0 and Deposit were fine. Actually everything else was fine as well as running the
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Geoff Graham's VT100 emulator
The SD card, SW0 and Deposit were fine. Actually everything else was fine as well as running the
Apr 17
Matthew Brugman
,
da...@hansels.net
5
Apr 6
Understanding bus signals
David, Thanks for taking the time to check all of that out - I appreciate the feedback, sanity check,
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Understanding bus signals
David, Thanks for taking the time to check all of that out - I appreciate the feedback, sanity check,
Apr 6
Walt Perko
Apr 4
Looking for a Little Feedback ... Suggestions?
Hi, I've been updating my webpages for the two Altair-Duino Pro computers I have: The first is
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Looking for a Little Feedback ... Suggestions?
Hi, I've been updating my webpages for the two Altair-Duino Pro computers I have: The first is
Apr 4
Walt Perko
2
Apr 1
Scientific Notation
Hi, Interesting, the Processor Technology 8080 FOCAL Cassette Rev A – SOL-20 Programming Language
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Scientific Notation
Hi, Interesting, the Processor Technology 8080 FOCAL Cassette Rev A – SOL-20 Programming Language
Apr 1
Matthew Brugman
,
Cliff Chism
3
Mar 31
LED output register card control program
Well done and am absolutely in awe of the documented code! Good code to learn from… Cliff On Tuesday,
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LED output register card control program
Well done and am absolutely in awe of the documented code! Good code to learn from… Cliff On Tuesday,
Mar 31
Matthew Brugman
,
Tom Wilson
6
Mar 28
A-D 8800 bus card for prototyping
I finally got the delayed shipment from that distributor in Thief River Falls. (Normally, I order
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A-D 8800 bus card for prototyping
I finally got the delayed shipment from that distributor in Thief River Falls. (Normally, I order
Mar 28
Jeff Conrad
,
Gwen Patton
2
Mar 28
XMODEM file transfer in the file manager for SD card on config menu
You have to start it from both sides. Starting it on one side has no mechanism to start the other
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XMODEM file transfer in the file manager for SD card on config menu
You have to start it from both sides. Starting it on one side has no mechanism to start the other
Mar 28
George Hines
, …
John Galt
4
Mar 28
Thanks Chris!
Thanks again Chris and David. I missed the original shipment of the floppy drives. mine are homebrew.
unread,
Thanks Chris!
Thanks again Chris and David. I missed the original shipment of the floppy drives. mine are homebrew.
Mar 28
Jeff Conrad
, …
sunnybo...@gmail.com
4
Mar 26
Z80 Emulation used for TRS-80 Clone
Don't neglect the TRS80 Model 4P. That was possibly the pinnacle of TRS80s IMO. Not only luggable
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Z80 Emulation used for TRS-80 Clone
Don't neglect the TRS80 Model 4P. That was possibly the pinnacle of TRS80s IMO. Not only luggable
Mar 26
sunnybo...@gmail.com
,
Tom Wilson
5
Mar 24
Altair-Duino 8080 (old version) problems
Thanks Tom! I have been able to load 16K basic from switches and run a couple of programs, so all
unread,
Altair-Duino 8080 (old version) problems
Thanks Tom! I have been able to load 16K basic from switches and run a couple of programs, so all
Mar 24
bob olbrich
, …
Cliff Chism
19
Mar 19
RTFM didn't help my poor SD card.
Problem Solved! FAT32 works fine with the AD 8800. Thanks everyone. I will have a new post soon for
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RTFM didn't help my poor SD card.
Problem Solved! FAT32 works fine with the AD 8800. Thanks everyone. I will have a new post soon for
Mar 19
John Kennedy
Mar 18
New retro CPU app for iPhone
My retro CPU iPhone app is now ready to share Lots of information on your favorite 8-bit and 16-bit
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New retro CPU app for iPhone
My retro CPU iPhone app is now ready to share Lots of information on your favorite 8-bit and 16-bit
Mar 18
John Galt
, …
da...@hansels.net
22
Mar 18
Disabling the front panel LEDS in the firmware need help.
I realized i didn't post tom's benchmark program 10 PRINT CHR$(12) 30 FOR T=2 TO 200 40 TM=T/
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Disabling the front panel LEDS in the firmware need help.
I realized i didn't post tom's benchmark program 10 PRINT CHR$(12) 30 FOR T=2 TO 200 40 TM=T/
Mar 18
Joseph Travis
,
Chris Davis
2
Mar 17
Issues with TTL-RS232 converters used with Altair-Duino 680
I've never seen that and I've used a whole lot of these. Just as a test, power it with 5v
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Issues with TTL-RS232 converters used with Altair-Duino 680
I've never seen that and I've used a whole lot of these. Just as a test, power it with 5v
Mar 17
Matthew Brugman
Feb 26
Proof of concept telnet client for Altair-Duino
(Note, this is presenting a telnet CLIENT to the Altair; not a telnet server serial port connector
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Proof of concept telnet client for Altair-Duino
(Note, this is presenting a telnet CLIENT to the Altair; not a telnet server serial port connector
Feb 26
Matthew Brugman
, …
da...@hansels.net
6
Feb 23
New build and an expansion port question
I did see that card, it definitely looks great for debugging and development. I think I'll move
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New build and an expansion port question
I did see that card, it definitely looks great for debugging and development. I think I'll move
Feb 23
M D
Feb 22
Can't load 4kBasic from serial port
I've been tearing my hair out for several days now trying to figure this out. I don't
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Can't load 4kBasic from serial port
I've been tearing my hair out for several days now trying to figure this out. I don't
Feb 22
Rob Foster
,
John Galt
2
Feb 15
CERN Large Haldron Collider code on the Altair Duino
run it through the bascom compiler and get 8 times the speed. On Sunday, February 15, 2026 at 12:03:
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CERN Large Haldron Collider code on the Altair Duino
run it through the bascom compiler and get 8 times the speed. On Sunday, February 15, 2026 at 12:03:
Feb 15
Walt Perko
,
da...@hansels.net
2
Feb 14
A little UpDate on the DAZZLER ...
The AD is an emulator, which interprets the Z80 opcodes. It does not have a fixed speed, the overall
unread,
A little UpDate on the DAZZLER ...
The AD is an emulator, which interprets the Z80 opcodes. It does not have a fixed speed, the overall
Feb 14
Cliff Chism
, …
peterq...@gmail.com
4
Feb 14
Strange Behavior Of Keyboard Using BASIC
It needed to work this way to be usable on a printing terminal like a teletype. On Saturday, February
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Strange Behavior Of Keyboard Using BASIC
It needed to work this way to be usable on a printing terminal like a teletype. On Saturday, February
Feb 14
Antonio Tamairón
, …
da...@hansels.net
15
Feb 13
Altair 8800 - Circuit for Music System not working for me.
Just for anybody who comes across this thread in the future: I made some measurements as to what
unread,
Altair 8800 - Circuit for Music System not working for me.
Just for anybody who comes across this thread in the future: I made some measurements as to what
Feb 13