Todo List

My little Todo list, no particular order

Programmer

PCB

• redesign pinout: map CPU port to data bus and address bus
• connect SD card holder to hardware SPI port
• add connector for SPI touchscreen
• move SD acrd slot to align with USB slots and flip it to top
• maybe add LEDs in case we don't mount the LCD

Case

• create CAD file for case
• connectors go on the left, SD card and USB are aligned
• must be easy to insert and release ROM card
• no PCB should be visible
• space for touch LCD
• screw holes, rubber feet recesses
• some Logo, a better name

Firmware

• write multiple pages at once
• optional autorun.txt file to program cards without needing a host PC
• append filename to r, w, v commands
• interactive file selection
• option to append .pkg files to a REx

Host Software

• GUI tool to create Rex files
• maybe: tool that uses serial connection to programmer, but presents a better UI

Documentation

• low end: use GitHub to manage all publications
• high end: better name, get a logo, have a '96 style web page and flyer designed

Flash ROM Card

Add bank selection.

PCB

• low end: add a jumper to choose banks
• high end: add auxiliary CPU to choose banks via software, PLC? EEPROM?
  • check MAX PCA9559 to immediately set the bank selection at startup
  • check ATtiny (how do we send it commands?)
  • check PicAxe CPUs

Newton OS

Programming Software

• add code in ROM to switch off MMU, so it can't be called from RAM
• check if we can write to the Flash ROM from program in RAM
• check if we can erase pages and reprogram words and blocks
• write an app that can read data via serial port and write it to Flash ROM
• add functionality to read Wifi/WLAN vie NIE
• add ability to append .pkg to ROM extension
• app to read from stream and write 8MB block to PCMCIA card
• create minimal OS that can read from PCMCIA and overwrite the OS
• add function to read from serial port

ROM Patches

• revive disassembler and add Rex disassembly
• write pattern matcher to cross references labels in US, D, and FR ROM
• write app to patch ROM using ARM .obj file
• find extra check in Watson ROM, patch it, and enable any software on the FR ROM
• add patch to open in-situ programming backdoor
• add patch for Y2010 for US, D, and FR
• user request for more patches, docs on how to patch the ROM

ROM Extensions

• document all the elements that can go into a Rex