#vintage-computing

How my PX-41CX assembly went and lessons I learned from the PC16C build.

How my PC16C assembly went and lessons learned from a noob.

A video on one of my favourite programmable calculators. I think keystroke programming is an underrated technique. While Basic and later Pascal style languages are more powerful — if you want mobile on

I recently bought a HP-16C for myself and made a small restoration.

IRQ Interrupt

NMI Interrupt

Print decimal number

Add crystal oscillator

Add disassembler to monitor

Using subroutines to make the Hello World even more compact!

Improved Memory Management Unit

Using a look to make the Hello World more compact!

Add display and print “Hello, World!”

Macro Assembler

Add VIA (Versatile-Interface-Adapter)

Add reset vectors to ROM

Attach ROM to CPU

Start CPU

Create a ROM with only NOP operations.

CPU Monitor program