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Sure, the Order can be changed, just by squeezing another type connector pretty close to the existing connectors. Or you can make a longer cable so you have a connector of each type at the CENTER and END of the cable. Larry

Here are two samples of 10 Degree Top Viewing IR LED's that are 100ma MAX Current and 1.5 VDC Forward Voltage, with a MAX of 1.7 VDC. They are about 5.7mm OD. Amazon has some that are 3mm OD and a matched Source & Receiver. (No information about their Beam width or direction.)...

The Mitsubishi M-5853 Schematic is attached. Larry

Here is one Adapter from Amazon and there are some on EBAY. The EBAY one says it will not work with Sony VGA Multi-sync monitors. https://www.amazon.com/Dual-9-Pin-15-Pin-Adapter-Signals/dp/B0B33XNWW1 I've never tried any of these adapters. I did find some Apple Hard Drives on EBAY that are...

After seeing all these Pictures of the backplane and all the Tantalum Capacitors it makes wonder if one of those could be pulling one of the power supply voltages down, but not shorted. When it is testing Memory and the message "PRESS ESC to ABORT", if you do nothing, how long will the memory...

I stumbled across some unusual files that I had downloaded from the following URL: http://cpmarchives.classiccmp.org/cpm/Software/maslin/index_dirHTML.html#IDmaslin_c_d_3oct95-ddrive-sydex-ampro- There were several *.cym, *.aym, *.dyc, *.tyt, and *.lyr files, that needed to be extracted with...

ven, The Only test adapters that I know about are the Z80 NOP Tester and the Romulator. You can make a Z80 NOP tester by using a known good SPARE Z80. Bend the D{0..7} Pins out so they do not go into the Z80 IC Socket. Then Jumper D{0..7} to the GND pin on the Z80 CPU. Insert the Z80 with the...

The Ampro Board is an A60267 and the EGA Card is A13022-B. Can you get into the SETUP for the A60267 Computer? Likely the Dallas DS12887 Real Time Clock battery has died and is preventing access. There are replacement RTC's available on Tindie by GLITCH...

Here is the Elston Document along with my Kaypro Elston Schematic and I think the DM30-120BO file is from the Northstar Manual. Larry

Three things on the PCB side of the Elston Circuit Board look suspect. 1. There are solder Rings around several Pins that are soldered to the PCB Pads. Typically, a Ring around a Pins means a bad solder Joint. One of these is a 4 Pin Plug to some remote connection. All Solder connections...

I found Version 1.10 on my old Hard drive. Larry

What type Floppy are you inserting into the 5.25" Floppy Drive" Double Density or High Density? 360K Double Density Floppy's have a center Hub Ring, Spin at 300 RPM, while 1.2M High Density do not have a center hub ring, and Spin at 360RPM. Deramp has an article on the SD-800...

Brad, Nope, the Floppy's show up in Debian Linux as /def/fd0 and /dev/fd1. Debian communicates to the GreaseWeazle via a USB Cable as Device /dev/ttyACM0. A read command in Terminal is: $ ./gw read --tracks c=0-79:h=0-1 --device /dev/ttyACM0 --rate 250 A2-80.SCP Larry

Brad, Yes, you can write the t3dt16_dsk.img directly to floppy just by using the "dd" command in Debian Linux. It is a *.RAW Image (Sector Dump) and HxC or the Imagedisk utilities (IMDA, and IMDU) can easily extract the .RAW file from the *.IMD file. I typically use a batch file in DOSBOX to...

I found that Program on my Old Hard drive image. I think my Leading Edge Model M had version 2.1 and I upgraded to DOS 3.3. But, I might be mistaken. Larry

Yes, I need to know if it's just the Key Cap or do you need the switch also? Message me your address. Key CAP $3.00 Key Switch $3.00 $3.00 plus actual USPS shipping cost to your address. Larry

Frank, Any progress? Larry

The TPI is a Tandy Clone of the Tandon TM-100. It uses a SIP that is 150 OHM for the Terminator Resistor R51. RP51 = 150 OHM SIP 1 RP1-1 N MOTOR 2 RP1-2 DIRECTION 3 RP1-3 STEP 4 RP1-4 N WRITE DATA 5 RP1-5 N WRITE GATE 6 + 5.0 VDC I have extracted the pages for the TPI from the Model...

Here is a good Photo of the crossover cable that prevents users of being confused. Those IBM folks sure cleared all the confusion by doing their part. :) Notice that Pin 10 & Pin 16 are now Motor ON. Larry

The Model 4 has 256 (0x00-0xFF) Characters arranged in an 8 x 8 matrix. Attached are the "A" & "a" Characters decoded from my Excel file. The remaining Characters are decoded in the same manner. I created the attached BMP file of the Model 4's Characters, several years ago. I haven't VERIFIED...