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1976 DATAC 1000 6502 Training Computer |
Heathkit Tube Checker Model TC-3by billdeg Total messages in this thread: 1 [image pending] circ. 1958-1961 1. Use the rolling tube testing settings chart 2. Set all of the levers to the center position 2.5 Move the SET LINE dial clockwise to turn on the unit and stop when the needle points to 50. Switch the short/leakage switch to short 3. Set the Type, Filament, Plate dials to match the tube type. Note that many tubes have two test combinations 4. Move paddles in the Top column up, the Bottom column down and leave the others in the middle 5. insert the tube in the appropriate tube holder 6. Let the tube warm up. 7. Press down the short adjust line lever to the test position. Does the needle display move into the GOOD area? If so the tube is good. If the short light comes on or the needle points to the BAD side, the tube is bad. 8. Move the short/leakage switch into the leakage position and repeat the test. 9. If the tube">... [ read more ] |
Bigger Apple II PEEK, POKE and CALL Listby billdeg Total messages in this thread: 1 For my own reference and maybe yours... https://apple2...---------------- APPLE CALL, PEEK, POKE LIST CALL 144 SCAN THE INPUT BUFFER CALL 151 ENTER THE MONITOR NORM APPLE CALL, PEEK, POKE LIST ------------------------------------------------------------------------------ CALL -144 SCAN THE INPUT BUFFER CALL -151 ENTER THE MONITOR NORMALLY CALL -155 ENTER THE MONITOR & SOUND BELL CALL -167 ENTER MONITOR AND RESET CALL -198 RING BELL (SIMULATE CONTROL G) CALL -211 PRINT "ERR" AND RING BELL CALL -259 READ FROM TAPE CALL -310 WRITE TO TAPE CALL -321 DISPLAYS A, S, Y, P, & S REGISTERS CALL -380 SET NORMAL VIDEO MODE CALL -384 SET INVERSE VIDEO MODE CALL -415 DISASSEMBLE 20 INST">... [ read more ] |
DEC VX40 Multiaby billdeg Total messages in this thread: 3 Updated: [ Better Login ] 01/21/2022  This tiny (~10 inches wide) DEC VX40 Multia stared out as a VX40B and was field upgraded to a VX40L-F2 . Click image to see files
 Boots up like a typical Alpha from the mid 90's. This system has VMUNIX installed but I have not yet cracked it to get access. Click image to see larger view.
See boot screen succession snapshots.
If you the reader have experience with this hardware or have any comments please contact me. More to come.">... [ read more ]
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1979 HAL DS-2000 KSRby billdeg Total messages in this thread: 1  The HAL Communications Corp HAL DS2000 KSR smart terminal. Click on image for larger view.
 The manual refers to this BMC monitor, so I assume it was purchased along with the KSR unit. Click on image for larger view.
 Here is a nice big pic of the boards and wiring view, with the case open. Click on image for larger view.
More pics
What's next? Attach it to a computer expecting a current loop as if the HAL were a Teletype. There is also Morse code and Baudout communications.">... [ read more ]
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UNIVAC 1 and UNIVAC File Computer 1by billdeg Total messages in this thread: 2 Updated: [ UNIVAC 60 / 120 modules and 5823 tubes ] 08/23/2021  The two long modules in the back are from a UNIVAC 1 that was located in New York State. The UNISERVO tape is from DuPont and the drum memory component is from a UNIVAC File Computer Model 1. Click on image for larger view.
To see more photos of the UNIVAC I and UNIVAC I File Server components stop by Kennett Classic or click here.
See page 34 of http://www.bitsavers.org...enance_Manual_Jan58.pdf">... [ read more ]
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MICRO Indexby billdeg Total messages in this thread: 1  Click image to download MICRO Index of articles sorted by system.
At Kennett Classic we have a complete (or near complete) run of MICRO journals. These along with a whole lot more will be available in our library room by the end of the summer. MICRO first appeared in 1977 and it caters to the Apple, AIM, SYM, KIM, Atari, OSI and PET developer. In their own words, MICRO is "the technical reference journal which reports monthly on the development and practical abd theoretical application of new 6502 microcomputer technology"">... [ read more ]
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AST PremiumExec 386SX/20 laptopby billdeg Total messages in this thread: 1  An AST Premium Exec 386SX/20 laptop from about 1991. Click image for larger view.
Powers up, needs a new CMOS battery.">... [ read more ]
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RDI PowerLite Sunsparc Laptop 85/110Pby billdeg Total messages in this thread: 1  The RDI PowerLite has a microSPARC II processor and was made to run Sun OS like a Sun SparcStation 5. Click image for larger view.
Alas, struggles but does not power up. Characteristic of a power cap failure. Worth fixing, eh?">... [ read more ]
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Amiga 1000 Engineering Sampleby billdeg Total messages in this thread: 1  This Commodore Amiga 1000 came from the engineering department and was owned by former CBM engineer David Diorio. Click for larger view.
This system is unique because it has no serial number or identification plate on the case, keyboard or mouse. The ROMS are v1.1 and the keyboard has the "bouncing ball" logo in the upper right corner. The power supply switch is backwards. Otherwise it appears to be a normal early Amiga 1000 with a memory expansion board.
More pics">... [ read more ]
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Commodore 64C DEV Motherboard 250451by billdeg Total messages in this thread: 1  C64C dev motherboard with:
PCB ASSY NO.250451PCB No. 251915 Rev.2 printed on it. The VIC chip is missing. Click image for larger view.
I don't see this board documented in the normal places and the PCB does not come up in a search. The VIC-II is missing. The board was originally owned by CBM engineer David Diorio and was donated to Kennett Classic when he unfortunately passed to the great motherboard in the sky recently. My initial guess is that it was a dev board from when the Commodore 64C was being crafted, or David was experimenting or modifying the design somehow. I have asked around to see if anyone knows more.
More 250451 pics
CBM-hackers Thread:
Excerpts:
">... [ read more ]
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Post Vintage Computingby billdeg Total messages in this thread: 2 Updated: [ Thoughts about NEW Vintage Computing ] 03/09/2021  A collection of computers from 1987 through 1995. Click image for more photos as they become available.
The vintage computing GUI era is well represented in this photo from the new Kennett Classic post-vintage gallery on display.">... [ read more ]
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iCOM 3712-58 dual 8 in driveby billdeg Total messages in this thread: 4 Updated: [ DERAMP PC2FLOP ] 02/11/2021  Pictured is the test system set up to explore the functional status of this iCOM 3712-58 dual 8" drive. Click image for larger view.
Referring to a 2006 post I made on a vc forum, Mike Douglas ("DERAMP") contacted me to see where things stood with the project. He had a similar drive. I had not done anything with the drive since 2006. But had I known that I had the correct s-100 interface card for the drive, i would have tried sooner. Mike sent images of the interface cards that work with the iCom. I checked my inventory to finally match an unidentified controller to its peripheral. It was also fortunate that drive had an Altair-compatible CP/M . AND! I picked up along the way the schematics for the drive. I finally had everything to take a">... [ read more ]
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Intel 4040 IM 1010 PROM Programmerby billdeg Total messages in this thread: 2 Updated: [ NOTES / Repairs ] 02/05/2021  The International Microsystems (IMI) IM 1010 PROM Programmer has an Intel 4040 microprocessor. Pictured is the programmer with the 2708 / 2716 pod option inserted. These pods can be removed and replaced as needed. The system has both Burroughs Panaplex display and serial output, one can switch between them. Click image for larger view.
I have a lot of notes and the schematics. The programmer was donated in a non-working state but I am hoping we can get it rolling again. This programmer has pods that can handle 2708, 2716, 2716-1V, 2732, 2758, 2532.
I am unfamiliar with TIGEN 1 and IM ROSI, but these labels appear as options (ROSI RAM/EMULATE/PROM).">... [ read more ]
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Digital DECmate VT278by billdeg Total messages in this thread: 5 Updated: [ Drive Cable Found, but... ] 02/01/2021  Digital DECmate VT278 Click image for larger view.
EK-VT278 Technical Description
 The DECmate VT278 is a PDP 8 on a CPU / RAM board installed in a VT-100 chassis. Pictured here is the SETUP screen one sees upon successful boot. Click image for larger view.
 ... [ read more ]
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