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A project log for Vintage Z80 palmtop compy hackery

It even has a keyboard!

esot.ericesot.eric 07/26/2021 at 04:520 Comments

I've so many tabs open... and so many other bookmarks, this is in no way complete, nor in order. In fact, there are many great ones I've flat-out left out, since this was for tab-cleanup. Maybe I'll get back to this.

...

ZAC, the z80 compiler, runs /on/ the TI-86. Also comes with an IDE and nice text-editor that also run on the calculator.

https://www.ticalc.org/archives/files/fileinfo/92/9266.html

This guy is reverse-engineering the 86 right down to gerbers of the PCB. This'd've been /really/ handy, if I hadn't found it so late in the game. Still... Amazing work, and surely useful.

http://diolum.free.fr/projets/TI-86/TI-86.html

http://diolum.free.fr/projets/TI-86/OLD-TI-86.html

TI-85 schematic:

crud, that was supposed to be a link.

TI-85 Port Documentation (The T6A43 CPU is the same, including the ports... mostly.):

https://www.ticalc.org/pub/text/calcinfo/ti-ports.txt

There are two files at ticalc.org for the 86's ports... I should dig up their links... those three docs work together to paint a better picture of the T6A43's ports, in general.

https://www.ticalc.org/cgi-bin/zipview?text/calcinfo/86port4.zip;86-PORT4.TXT

https://www.ticalc.org/pub/text/calcinfo/86ports.txt

... stuff here:

https://www.ticalc.org/pub/text/calcinfo/

...

Great Resource, all 'round the site, for z80 stuff, ASM, stuff, TI-OS stuff, and TI-86 programming:

http://jgmalcolm.com/z80/

Z80 instruction set:

http://z80-heaven.wikidot.com/instructions

Z80 ASM stuff:

https://k1.spdns.de/Develop/Projects/zasm/Documentation/z80.htm

https://tutorials.eeems.ca/Z80ASM/app1a.htm

TI-86 Programs:

https://www.ticalc.org/pub/86/asm/programs/

Random goodies:

TI-86 with an STM32?!!!

https://hackaday.io/project/3437-ti-86-replica

I dig the hardware-hackery-enthusiasm in this thread... most forumstuff I've found seems mostly limited to writing games, etc...

https://www.omnimaga.org/general-technology-and-hardware-discussion/interfacing-ic%27s-with-the-z80-in-an-84/

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