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Al Kossow
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Al Kossow
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Yesterday,
04:29 PM
Al Kossow
replied to a thread
Composite color artifacts: made by design or happy coincidence?
in
PCs and Clones
twitter threads about cga color https://twitter.com/TubeTimeUS/status/1346600318054723584 https://twitter.com/TubeTimeUS/status/1350174108693143552
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18 replies | 280 view(s)
Yesterday,
01:28 PM
Al Kossow
replied to a thread
IBM Series/1 for sale
in
Vintage Computer Items For Sale or Trade
private messages are a wonderful thing try using them
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10 replies | 304 view(s)
Yesterday,
12:12 PM
Al Kossow
replied to a thread
IBM Series/1 for sale
in
Vintage Computer Items For Sale or Trade
http://bitsavers.org/pdf/ibm/series1 you're welcome.. and if you don't already know what it is, you don't want one.
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10 replies | 304 view(s)
January 15th, 2021,
09:42 AM
Al Kossow
replied to a thread
Altos 886 restoration (some questions/help needed)
in
Other
the listing wasn't real. he was using it as bait to try to find software he was looking for
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9 replies | 220 view(s)
January 15th, 2021,
05:07 AM
Al Kossow
replied to a thread
Altos 886 restoration (some questions/help needed)
in
Other
well, here is a complete set of installation disks, but there is no fking way i'm spending $1000 for it...
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9 replies | 220 view(s)
January 14th, 2021,
12:03 PM
Al Kossow
replied to a thread
Surface mount soldering magnification with a used $50 document camera?
in
General Vintage Computer Discussions
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12 replies | 330 view(s)
January 14th, 2021,
11:36 AM
Al Kossow
replied to a thread
EBay $$$
in
Humor
I wonder what the float is on all that cash they are sitting on.
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16 replies | 1283 view(s)
January 14th, 2021,
09:45 AM
Al Kossow
replied to a thread
Altos 886 restoration (some questions/help needed)
in
Other
it would be tedious, but since you have simulated floppies working you can copy every block of the full raw disk using dd with the count and skip...
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9 replies | 220 view(s)
January 14th, 2021,
09:26 AM
Al Kossow
replied to a thread
Altos 886 restoration (some questions/help needed)
in
Other
> I can record the system booting and upload it to youtube Get your priorities straight The first thing you should do is make an image copy of...
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9 replies | 220 view(s)
January 12th, 2021,
09:35 AM
Al Kossow
replied to a thread
Dr. Suding questions
in
General Vintage Computer Discussions
Unfortunately you can't believe everything you read. There is someone who claims to have invented the term "software" in the 1950's for code that...
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21 replies | 384 view(s)
January 12th, 2021,
07:43 AM
Al Kossow
replied to a thread
Pertec ISA interface card
in
Vintage Computer Items Wanted
are you going to release the code for your interface?
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179 replies | 35134 view(s)
January 11th, 2021,
05:50 AM
Al Kossow
replied to a thread
Hard drive spins up only when "activated" then spins down immediately
in
Vintage Computer Hardware
Did the stepper motor ever move at all? If not, the first thing I would have done was to check the stepper motor drive circuit, not pull out the...
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18 replies | 684 view(s)
January 10th, 2021,
01:33 PM
Al Kossow
replied to a thread
runaway shipping cost on fleaBay
in
General Off Topic
US sellers, if they even have something I want, are generally 5 - 10x the price for the same item that they are just bringing in from China. I...
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22 replies | 1089 view(s)
January 10th, 2021,
01:46 AM
Al Kossow
replied to a thread
Data General - Various documents and reminiscences
in
Minis and Mainframes
Bruce Ray, Wild Hare Computers for all things DG
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13 replies | 343 view(s)
January 10th, 2021,
01:25 AM
Al Kossow
replied to a thread
Genrad 2115
in
DEC
I have two different models of these. Are you getting hardware documentation? what I have is at http://bitsavers.org/test_equipment/genrad/25xx ...
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4 replies | 158 view(s)
January 9th, 2021,
05:01 PM
Al Kossow
replied to a thread
Cm* machines, reading a DEC book.
in
DEC
Has any of the software survived? Guy Sotomayer didn't think so.
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11 replies | 2279 view(s)
January 9th, 2021,
03:36 PM
Al Kossow
replied to a thread
Address decoder revisited
in
S-100
74S was what TI and NS called them, and 82S was Signetics. If your programmer has an entry for the vendor, I would use that one. This all assumes...
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12 replies | 386 view(s)
January 8th, 2021,
09:09 AM
Al Kossow
replied to a thread
LSI-11 Front Panel schematic ?
in
DEC
http://www.heeltoe.com/index.php?n=Pcbs.Qbus-por
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6 replies | 299 view(s)
January 7th, 2021,
12:39 PM
Al Kossow
replied to a thread
Writing Mac 800kB disks
in
Later Apple (68000+ based machines - Mac, Lisa, etc.)
Backwards compatibility of media. The IWM was really painful to program, SWIM got rid of the worst and they finally added DMA in SWIM III because I...
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29 replies | 869 view(s)
January 5th, 2021,
08:26 AM
Al Kossow
replied to a thread
Writing Mac 800kB disks
in
Later Apple (68000+ based machines - Mac, Lisa, etc.)
"superdrives" are backwards compatible. you can write 400 and 800k floppies at least up through the powerbook G3's I do that all the time, and you...
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29 replies | 869 view(s)
January 2nd, 2021,
05:06 PM
Al Kossow
replied to a thread
Priam V150 exploded part, can anybody identify ?
in
Other
I bought a 50mb Vertex drive from an 886 off of eBay since my system was missing its disk and was able to dump its contents, which appears to be...
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16 replies | 486 view(s)
January 2nd, 2021,
03:31 PM
Al Kossow
replied to a thread
Priam V150 exploded part, can anybody identify ?
in
Other
that's good news. you can temporarily just put a jumper (or a fuse!) where that inductor should be to see if the drive spins up good V150s are...
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16 replies | 486 view(s)
January 2nd, 2021,
12:17 PM
Al Kossow
replied to a thread
Priam V150 exploded part, can anybody identify ?
in
Other
The other thing to watch out for is the power supplies in that whole product line fail a LOT I have a stack of 586, et al that all need their power...
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16 replies | 486 view(s)
January 2nd, 2021,
12:02 PM
Al Kossow
replied to a thread
Priam V150 exploded part, can anybody identify ?
in
Other
You really shouldn't turn a spindle by hand, especially if you don't know which way it is supposed to turn
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16 replies | 486 view(s)
January 2nd, 2021,
12:01 PM
Al Kossow
replied to a thread
Priam V150 exploded part, can anybody identify ?
in
Other
I just worked on one of these, it's an inductor part of a power supply input filter. The board failed I haven't checked to see if this is open....
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16 replies | 486 view(s)
December 30th, 2020,
11:42 AM
Al Kossow
replied to a thread
Hard drive spins up only when "activated" then spins down immediately
in
Vintage Computer Hardware
It can't do an initial head load / servo calibration. If you don't hear any head movement it may not even be bringing the drive motor up to the...
see more
18 replies | 684 view(s)
December 25th, 2020,
09:59 AM
Al Kossow
replied to a thread
Unibus cache controller FTI (Fabri Tek Inc) 960-1042-00
in
DEC
You replace a unibus jumper in your machine with it and it inserts a cache memory into the data path for everything downstream Conceptually, it is...
see more
8 replies | 414 view(s)
December 24th, 2020,
03:23 PM
Al Kossow
replied to a thread
imaging a whole hard disk into a file
in
PCs and Clones
A little convoluted, but i was able to dump it The thin client wouldn't recognize anything plugged into the mainboard IDE connector so I used an AT...
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22 replies | 1036 view(s)
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About Al Kossow
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About Al Kossow
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Silicon Valley
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