News:

2022.06.03 added links to LisaList1 and LisaFAQ to the General Category

Main Menu

A Lisa Inside An FPGA

Started by AlexTheCat123, September 04, 2025, 05:20:35 PM

Previous topic - Next topic

coffeemuse

#225
Quote from: AlexTheCat123 on July 13, 2026, 06:21:19 PM
Quote from: coffeemuse on July 13, 2026, 03:26:57 PMMy LisaFPGA is finally here, and it's truly a work of art.

However, I seem to have made a mistake in my calculations, or the physical boards are larger than the 3D model. The ports align perfectly, but the shell is slightly too small to accommodate the board. I'll need to spend some more time in Fusion360 to refine the design and make it usable.


Glad you like it so far!

Perhaps you specced the outer dimensions of the case to be the same as the board, so then when you expanded the walls inward, it ended up being too small? Just a total guess though.



That is very likely the cause. I created the box walls around the edge of the board, but I now suspect that I may have thickened the walls in the wrong direction. If so, should be a fairly easy fix once I have time to sit down to work on the project, which likely will not be until this weekend when I will have some time without distractions.

That's precisely what transpired. I increased the wall thickness inward, making the cavity smaller than the PCB. I'm currently reviewing every design element and double-checking my measurements before embarking on another 10+ hour print.

Former Apple Lisa 2/5 owner.
Current Retro Apple Gear:  LisaFPGA owner; LisaEm; Macintosh Color Classic; BlueSCSI 2 External w/ WiFi; BlueSCSI 2 internal; FloppyEmu; USB Wombat; WiRSa v3 Wifi RS232 Modem; 3x M0100 mice; Apple MessagePad 2100

ried

Seeing that 3D printed case and reading Alex's comments about battery life on a power brick made me realize that...

The first person to make a LisaBook wins the Internet.

warmech

Quote from: sigma7 on July 13, 2026, 06:27:02 PMI think LOS needs:

  • an xmodem file transfer program (that does binary files); this could be a command line program, but probably/eventually needs some assembly programming to achieve good throughput... the library serial routines have a lot of overhead.
  • a GUI hex file/disk editor
  • a peek/poke utility for use by EXEC scripts

edit: I realize now that I was thinking the "Workshop" rather than LOS itself.

It ain't XMODEM, but I did have to write a quick and dirty implementation of UUENCODE/DECODE for the Workshop for a uhh... different project I'm working on. It's not pretty and isn't technically directly compatible with the real UUENCODE/DECODE, as it requires accounting for the weird CR/LF issue with the Workshop, but it does allow you to send binary data over serial to the Transfer utility. And let me tell you, at 19200 baud with the LisaFPGA's improved serial buffer and overclocking, it makes moving files over sooooo nice, but I imagine it's dreadfully slow on actual hardware. I'll clean it up and post it to GitHub this week when I get some downtime in the evenings.

bmwcyclist

FujiNet for LOS!

A better document converter?

2nd on the xmodem



Using my LISA for writing blogs and other work projects and fun and games at home.
LISA 2/10, AST RAM board, ESProfile, FloppyEMU, reproduction LISA 1 mouse, BlueSCSI