Power Mac G3 ROM

From Misc Data Digs

Developer Photo[edit]

Power Mac G3-Extract1.jpg

While there is a JFIF file in the ROM at 2E6E80, it doesn't seem like it could be accessible without either opening up the Open Firmware prompt or hacking. It's unknown if there is still a way to make this image appear. Given that this ROM was one of the last Old World ROMs, it's likely the last of such photos hidden in Apple's ROMs.

Developer Credit Strings[edit]

Also present in the ROM are quite a few developer credits:

STM Version 2.2, Aaron Ludtke CTE Version 2.1
v2.1 Rules! Long Live M. Appleman, S. Williams, A. Ludtke
Software by Casey King, Hardware by James Lundblad and Mohammed Sriti
Sony. MFM Floppy Driver. (C) Jul-1997 Apple. By: Ben Koning. S Thanks: Buczek, Christensen, Parsons, Polic, Sheet, Wilkinson, Cronce, Eisenberg.
InterfaceLib - May 23, 1993.(Copyright Apple Computer, Inc. 1984-1993. Eric Traut & Sean Parent
680x0 Emulation written by Gary Davidian
Dynamic Recompilation by Eric Traut, tuned by Bob Abeles

Serial Test Menu[edit]

Hidden in the ROM at 307CE8 is this serial test menu, but there's no confirmed way to access it:

Serial Test Manager
T) Execute a test, single test number follows command
T0) Run ROM Checksum Test
T1) Run Address Line Test
T2) Run Data Line Test
T3) Run Simple RAM Test
T4) Run Mod3 Forward Test
T5) Run Mod3 Reverse Test
T6) Run NVRAM Test
T8) Run AddrPattern Test
T9) Run NTAWord Test
A) Execute all ROM-based tests
Q) Quick test
X) Exit STM (Continue booting)
?) Print this menu