2.11 With User Disk COMMODORE SX-64 VINTAGE COMPUTER WORKING CONDITION COMPAQ PORTABLE III COMPUTER SWTPC 6800 in custom case with PLEXIGLASS Cover *Rare* Send feedback to because we really would love to receive your email or audio comment. Links mentioned in this episode: Auctions Jeff COMMODORE SX-64 VINTAGE COMPUTER WORKING CONDITION COMPAQ PORTABLE II 2 COMPUTER Luggable PC 5-1/4″ Disk Hard Drive Personal WK COMMODORE 64 C64 SX64 PLA REPLACEMENT SYNERTEK SYM-1 SINGLE BOARD MICROCOMPUTER 6502 from Kim-1 #2 David 1983 Compaq Portable Computer, MS DOS Ver. We’re going to cover the Compaq Portable, the Commodore SX-64 and perhaps other misc. I am therefore going to use a form of Top-Down, Stepwise Refinement to ensure that the program is correct before entering.Compaq Portable On this episode, we conclude our look at the first half of the second tier of personal computing… the luggables.

The program needs to be well designed before it is entered into the computer due to the difficulty of making changes once it has been entered. This may not be the most exciting program ever, but with all that switch flipping, I don't want to attempt anything too ambitious. The speed of the light's movement will be controlled by the PROGRAMMED INPUT, so that when set to 0x00 it will be fast and then get slower as the PROGRAMMED INPUT is increased to 0xFF. After some deliberation, I have decided to write a program to bounce a light back and forth on the PROGRAMMED OUTPUT. I would also like to be able to control it via the PROGRAMMED INPUT switches. The main consideration in choosing what program to create, is that it has to be small as I want to toggle it in via the front panel switches. Intel 8080 Brief Explanation of the instructionsĪrmed with the above information and the knowledge that the PROGRAMMED INPUT/OUTPUT on the Front Panel is available via port 0xFF, I could now proceed.Intel 8080/Z80 Instruction Set and Comparison.

I didn't find much out there, but what I did is listed below. Having never programmed an IMSAI 8080 before, I needed to gather some information about it and the Intel 8080 CPU that it uses. You may want to look at the afore mentioned article if you don't own an IMSAI 8080 and don't already have an emulator for it. In this article I will show you how I went about it, and how you could do the same. I have therefore chosen to design and write a program for the IMSAI 8080. This interest was peeked by my last article: Using the latest z80pack, version 1.17, to emulate an Altair 8800 or IMSAI 8080 using the new graphical FrontPanel. I have long been fascinated with entering programs into computers by methods not involving a standard keyboard and monitor.

Imsai 8080 emulator raspberry