#mostek

Z80 Testing the 80s Way - According to [MTSI], if you used a Z80 chip back in the 1980s, it almost certainly... - https://hackaday.com/2024/11/12/z80-testing-the-80s-way/ #retrocomputing #fairchild #mostek #z80

Trying to reverse-engineer some code from a #Mostek #MK3870 (Fairchild #F8 instruction set). Only 1408 bytes of code, which is roughly a thousand instruction, and 640 bytes of table. It uses interrupts from a timer and a photo interrupter. There's a state variable with about 8 values that controls what the interrupt handler does. Aside from a data buffer, and a pointer into a ROM table, there appear to be about ten variables. I've figured out two of those so far.

A 1970s Mask ROM Microcontroller Spills Its Secrets - If you buy any kind of electronic gadget today, chances are it’s powered by a micr... - https://hackaday.com/2023/09/30/a-1970s-mask-rom-microcontroller-spills-its-secrets/ #reverseengineering #microcontrollers #firmwaredumping #maskrom #romdump #mk3870 #mostek

#OLIMEX has announced work on ArgonLight ("The Zilog Z80 CPU from 1976"-like SoC 8-bit system running BBC BASIC)

https://olimex.wordpress.com/2022/12/09/agonlight-open-source-hardware-retro-computer-running-bbc-basic-was-captured-in-kicad-and-updated-by-olimex

#OSHW #retro #zilog #z80 #8bit #mostek #synertek #xp

Up Close and Personal With Some Busted Avionics - When he found this broken Narco DME 890 that was headed for the trash, [Yeo Kheng ... - https://hackaday.com/2021/07/10/up-close-and-personal-with-some-busted-avionics/ #microcontroller #teardown #avionics #mostek #dme