Firmware for Mac ROM SIMM programmer

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Doug Brown 82df6ea459 Fix a few minor issues I noticed that after I implemented the SPI optimization of cycle counting instead of polling on SPIF, the first "normal" SPI transaction I tried would fail. This is because nothing was clearing the SPIF flag anymore, and the normal SPI driver still looks at it. So it was thinking that the latest transaction was already completed (it wasn't). Worked around this by making sure we clear the flag in SPI_Assert. I'm not concerned about performance impact here because the actual clean SPI driver is not used in performance-bound situations. Fixed an issue that identified the wrong pins as shorted to ground in the electrical test functionality. Whoops!		2020-11-27 00:16:35 -08:00
.settings	Fixed bug that screwed up reading after doing an electrical test.	2012-03-04 12:03:02 -08:00
drivers	Add/update copyright	2020-11-27 00:16:35 -08:00
hal	Fix a few minor issues	2020-11-27 00:16:35 -08:00
tests	Fix a few minor issues	2020-11-27 00:16:35 -08:00
.cproject	Break out code into a HAL, optimize flash operations	2020-11-27 00:16:35 -08:00
.gitignore	Ignore local settings files. Get project compiling on my computer.	2020-11-27 00:16:35 -08:00
.project	OK -- so I separated the actual port code from the external memory controller code. I think this makes more sense.	2011-11-27 00:01:29 -08:00
LICENSE.txt	Added GPL license text file.	2012-05-25 22:41:15 -07:00
README.md	Update README.md	2020-11-26 23:41:14 -08:00
SIMMProgrammer-AVRStudio.atsln	Added AVR Studio project file for SIMM Programmer firmware	2016-04-25 13:48:59 -07:00
SIMMProgrammer-AVRStudio.cproj	Added AVR Studio project file for SIMM Programmer firmware	2016-04-25 13:48:59 -07:00
chip_id.h	Add/update copyright	2020-11-27 00:16:35 -08:00
led.h	Add/update copyright	2020-11-27 00:16:35 -08:00
main.c	Add/update copyright	2020-11-27 00:16:35 -08:00
programmer_protocol.h	Add/update copyright	2020-11-27 00:16:35 -08:00
simm_programmer.c	Optimize reading of 1024 byte chunks	2020-11-27 00:16:35 -08:00
simm_programmer.h	Add/update copyright	2020-11-27 00:16:35 -08:00
util.h	Break out code into a HAL, optimize flash operations	2020-11-27 00:16:35 -08:00

README.md

Description

This project is a bootloader and firmware for a Macintosh ROM SIMM programmer, along with control software for Mac OS X, Windows, and Linux. The ROM SIMM is compatible with the SE/30, all II-series Macs with a 64-pin SIMM socket (should include the IIx, IIcx, IIci, IIfx, and IIsi), and the Quadra 700.

This particular repository contains the main firmware that runs on the programmer board. The current compiler version used with this project is avr-gcc 4.8.2. Using a different version of gcc may result in worse performance due to some very tight optimization performed on this project to decrease programming time.

Downloads

Binary downloads (originally from Google Code) can be found at https://github.com/dougg3/mac-rom-simm-programmer/tree/downloads/downloads

Repositories

The project is spread over a few repositories. Some of them have a wiki.

Repository	Repository location	Wiki location
Programmer Firmware (AVR microcontroller)	https://github.com/dougg3/mac-rom-simm-programmer	https://github.com/dougg3/mac-rom-simm-programmer/wiki
Bootloader (AVR microcontroller)	https://github.com/dougg3/mac-rom-simm-programmer.bootloader
Programmer Software (Windows/Mac/Linux)	https://github.com/dougg3/mac-rom-simm-programmer.software	none
Windows Driver (.inf file, not needed on Windows 10)	https://github.com/dougg3/mac-rom-simm-programmer.windriver	none
Custom QextSerialPort for Programmer Software	https://github.com/dougg3/doug-qextserialport-linuxnotifications	none
QextSerialPort base	https://github.com/qextserialport/qextserialport	https://github.com/qextserialport/qextserialport/blob/wiki/Welcome.md
CAD for programmer, along with 2 MB and 8 MB SIMM PCBs	https://github.com/dougg3/mac-rom-simm-programmer.cad	none
Mac ROM patcher	https://github.com/jpluimers/macrompatcher/ (from https://code.google.com/p/macrompatcher)	none

Videos

ROM SIMM

What	Where
IIci booting from ROM disk	https://www.youtube.com/watch?v=SEFcQRmYtBI
Mac IIci Modified (Slower) Startup Chime	https://www.youtube.com/watch?v=lyIIRtR3Aw0
Playing with IIci ROM - other death chimes	https://www.youtube.com/watch?v=mlmt1AealLo
Mac IIci with a newer Mac's startup chime	https://www.youtube.com/watch?v=bRJtMMYCf0E
Mac IIci with Super Mario Bros startup chime!	https://www.youtube.com/watch?v=omL7mx0zxvI
Mac IIci Mario Startup Chime Part 2 -- Long!	https://www.youtube.com/watch?v=Yen0omvBo2Y
Mac IIci - Another Custom Startup Chime	https://www.youtube.com/watch?v=1R4W3mApAio