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New Activity (
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Older Activity
Today,
02:40 PM
Trixter
replied to a thread
Lo-tech XT-CFv3 versus Texelec's "Lo-tech ISA XT CF Adapter rev. 3"
in
Vintage Computer Hardware
I would certainly be in support of that, for obvious reasons. I cannot advise on such a project due to limited understanding of...
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38 replies | 2938 view(s)
Today,
02:37 PM
nikola-wan
replied to a thread
ISC Intercolor 8001
in
Other
Looks like Cherry keyswitches - I'll bet the switches still work as the shafts are complete. Even the one on the top row likely has enough shaft to...
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18 replies | 269 view(s)
Today,
02:20 PM
normanator
replied to a thread
Olivetti M24/AT&T 6300/Xerox 6060 Display Enhancement Board (DEB) materials available
in
PCs and Clones
Trixter, Do you still have the DEB software accessible somewhere? I couldn't get to this link. I've got a DEB card, but need at minimum the...
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5 replies | 608 view(s)
Today,
02:15 PM
Bill-kun
replied to a thread
RLL HDD failure at boot
in
Vintage Computer Hardware
Two hard disk controllers in a system at the same time like that is just asking for trouble. Even if it says it can change the address, or disable...
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2 replies | 55 view(s)
Today,
02:14 PM
DeltaDon
replied to a thread
Acorn Computer parts found in our Yearly "hard Rubbish'" on side of road.
in
Other
Nice find. Too much of the these types of vintage stuff is ending up in recycling.
see more
7 replies | 208 view(s)
Today,
02:05 PM
Computing81
replied to a thread
SuperStride 740 help
in
Minis and Mainframes
Thanks, I'll check that stuff out.
see more
2 replies | 36 view(s)
Today,
02:03 PM
simmiv
started a thread
IBM PC JX history and background
in
PCs and Clones
Hi everyone, I've finally managed to dump a lot of the information I've been reading on the IBM PC JX computer, which appeared in Japan in the mid...
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0 replies | 9 view(s)
Today,
01:45 PM
Trixter
replied to a thread
Reserve a 64k page in MS-DOS
in
Vintage Computer Programming
Careful, it's not IMA ADPCM or MS ADPCM, but a custom ADPCM that you can only create (as far as I know) by compressing your samples using VEDIT or...
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18 replies | 137 view(s)
Today,
01:39 PM
whartung
replied to a thread
Reserve a 64k page in MS-DOS
in
Vintage Computer Programming
Depending on the allocation scheme, you also have to be careful. Historically, many C based systems locate bookeeping information for the block,...
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18 replies | 137 view(s)
Today,
01:14 PM
pearce_jj
replied to a thread
Lo-tech XT-CFv3 versus Texelec's "Lo-tech ISA XT CF Adapter rev. 3"
in
Vintage Computer Hardware
Thanks for the replies. Glad to hear these boards are still working. So I think we're saying we'd like another board supporting CompactFlash with...
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38 replies | 2938 view(s)
Today,
12:58 PM
Nivag Swerdna
replied to a thread
Replacement Label for Commodore 8050 Disk Drive
in
Commodore
They came in and the letters are beautifully shiny. I had to order eight as that was their minimum quantity... so I have some spares...
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7 replies | 157 view(s)
Today,
12:51 PM
Bill-kun
replied to a thread
Vintage power supplies (PSUs), powering up, and the +3.3 V. orange wire
in
Vintage Computer Hardware
So, what do my measurements say? Are there any shorts on the power rails? Please help.
see more
15 replies | 651 view(s)
Today,
12:48 PM
Bill-kun
replied to a thread
Need help identifying circuit board component
in
Vintage Computer Hardware
Thanks. Can we please continue the previous thread? I posted my results of checking for shorts on the power rails twice, but no one responded to...
see more
6 replies | 33 view(s)
Today,
12:46 PM
Gianfilippo
replied to a thread
Olivetti M24s and DOS 6.22
in
Vintage Computer Software
Regarding point 4): The network card is a D-Link 220X, I am using the manufacturer's packet driver and it definitely works as tested in mTCP (for...
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8 replies | 142 view(s)
Today,
12:42 PM
Gianfilippo
replied to a thread
Olivetti M24s and DOS 6.22
in
Vintage Computer Software
I did solve the 80-column issue (in the same fashion taht you suggested), I also installed a brand-new battery for the RTC and I did test the mTCP...
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8 replies | 142 view(s)
Today,
12:28 PM
kb811
replied to a thread
SBC6120 - IOB6120 FLASH trouble
in
DEC
No front panel at the moment (WIP). The IOB6120 is plugged directly into the top of the SBC6120 (sandwich mode!). I will see about hooking up an...
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31 replies | 752 view(s)
Today,
12:24 PM
Al Kossow
replied to a thread
Need help identifying circuit board component
in
Vintage Computer Hardware
It is a variable capacitor. They rarely fail and would not effect the power supply.
see more
6 replies | 33 view(s)
Today,
12:19 PM
Mills32
replied to a thread
Reserve a 64k page in MS-DOS
in
Vintage Computer Programming
I finally decided to just use 32K, and try adpcm compressed format which is supported by all sound blaster cards.
see more
18 replies | 137 view(s)
Today,
12:16 PM
T-R-A
replied to a thread
IBM GL 300 PII 400 MHZ 6287-61U Audio driver.
in
Pentium (First generation)
Integrated sound was still fairly rare in Pentium II machines. Have you opened the case up to see if there is a card or not? Are there any...
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4 replies | 34 view(s)
Today,
12:15 PM
Trixter
replied to a thread
Olivetti M24s and DOS 6.22
in
Vintage Computer Software
The video BIOS is supposed to set the byte at 40h:84h correctly; if there is no video BIOS, the system BIOS is supposed to do this. Booting MS-DOS...
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8 replies | 142 view(s)
Today,
11:53 AM
Chuck(G)
replied to a thread
Need help identifying circuit board component
in
Vintage Computer Hardware
You'll always see a trimmer capacitor on 8088/86 PC boards near the 14.3818MHz crystal. This is a signal present on the ISA bus and the idea is to...
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6 replies | 33 view(s)
Today,
11:51 AM
clh333
started a thread
Following on Sparky: 1400 HD
in
Tandy/Radio Shack
Recently acquired a Tandy 1400 HD and after making first assessments am tearing down to get a better look at internals. Battery pack is dead;...
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0 replies | 11 view(s)
Today,
11:36 AM
Trixter
replied to a thread
Reserve a 64k page in MS-DOS
in
Vintage Computer Programming
I think the OP is really overthinking this. Chuck's solution is the safest: Allocate 128K, find the 64K DMA page boundary within that, and use that...
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18 replies | 137 view(s)
Today,
11:28 AM
shirsch
replied to a thread
Kaypro 10 & CoPower 88
in
CP/M and MP/M
I'll be glad to. Just give me a day or so.
see more
24 replies | 919 view(s)
Today,
11:13 AM
daver2
replied to a thread
Reserve a 64k page in MS-DOS
in
Vintage Computer Programming
The ‘trick’ will definitely NOT work on an 8088/8086 and not with <= 640K RAM. Sounds like sticking with a 32K buffer within a 64K memory block is...
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18 replies | 137 view(s)
Today,
11:12 AM
Timo W.
replied to a thread
Need help identifying circuit board component
in
Vintage Computer Hardware
Wrong. Many tantalum caps, which are known to go short sometimes when being old and not powered for a long time. We actually told him that already in...
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6 replies | 33 view(s)
Today,
11:10 AM
Trixter
replied to a thread
Olivetti M24 / AT&T 6300 Keyboard Emulator
in
PCs and Clones
And now I get to eat my words, as I just found an auction with KBD 302 keyboards. I ordered one and will test it out. I have some AT&T people in...
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56 replies | 13701 view(s)
Today,
10:59 AM
jlang
replied to a thread
Need help identifying circuit board component
in
Vintage Computer Hardware
c21 is a variable capacitor. Not likely to be the problem. It's used to trim the frequency of the oscillator (it's part of). Actually I didn't see...
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6 replies | 33 view(s)
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