I've been playing with a mini DOS for my KIM for several months now using old Atari disk drives. Atari used a serial async protocol to talk to perihpherals at 19200 baud, making it very easy to hook up a simple 6850 ACIA and some software. Yes, the file management is done in the KIM as opposed to ...

Back in the early 80s, I had a nice assembler that produced relocatable
code, then an external linker to pull in libraries to build the actual hex
format file. I use TASM, which is a nice assembler, but I want to be able
to link in my libraries.

What's a good recommendation for a decent assembler ...

In the late 70s, a company called ARESCO here in NJ made a 6502 version
of the FOCAL programming language. It was also distributed by the
6502 Program Exchange. Does anyone have a copy of that software?
Does anyone know the name of the fellow who ran ARESCO? I might
be able to locate the author by ...

Tom just put up the C code to implement the TB IL...

http://www.ittybittycomputers.com/IttyB ... /index.htm

While we don't have the original TB to work with, someone could hand-compile the C into whatever assembly language they would like.

Bob

I exchanged a couple of emails with Tom Pittman today about 6502 TB. Tom has the paper tapes, but no way to read them. He was willing to send a paper tape if I could read it. I asked around my office, and we had several S-100 machines, some KIMs, some SYMs, and piles of Z80s, but no paper tape ...

You should contact Ernest, the webmaster at www.apple2clones.com. He has a very large collection of clones and information on about 168 different machines. A lot of the clone owners hang out there. If anyone knows much about that machine, they'll be at that site.

Bob

No, I don't need the ASCII chart... I've got many copies of it. My concern was that "RUBOUT" is NOT an ASCII character, and wasn't sure it they meant BACKSPACE (CTRL-H) or DELETE (0x7f). From looking at the code, it doesn't appear the KIM really cares what the first character is, as long as there is ...

I've built the simple two-transistor 20 ma to RS-232 interface circuit from the KIM-1 FAQ, but stil get nothing. Yes, I jumpered V and 21; when RESET is pressed the LEDs don't light up, so it must be looking for input from the serial port.

The documentation says to press the RUBOUT key... that's ...

I'm trying to construct a motherboard for my KIM-1. Various sources show different signals for various pins on the connector. Some motherboards have both the Expansion and Application bus, while some have only the Expansion. The KIM-4 schematics seem to disagree with other "KIM-4" definitions, and ...