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What version of Open Firmware do you have? Apple disabled automatic USB booting between April and August 2004. I think you can use a command in Open Firmware to boot USB non-automatically. https://forums.macrumors.com/threads/guide-new-method-booting-from-usb-on-powerpc-macs.2403368...

Does the VGA card actually read from RAM or does it mirror the RAM by capturing writes? Probably the latter since it would be competing with both the 6502 and the video circuitry otherwise.

The Video ROM is where the Apple II keeps the character bitmap data - the Character ROM? Which screen shot is from the VGA card and which is from the composite output? You said the VGA was OK so the screenshot on the right must be from composite. The built-in video is not getting the correct...

According to https://forums.macrumors.com/threads/question-how-powerful-of-a-graphics-card-will-work-in-a-beige-power-macintosh-g3.2303689/ in the "List of Open Firmware versions", USB was bootable when FireWire became bootable - at least since Open Firmware 3.2.4f1 02/18/00. Apple removed...

What makes a What makes an anti-static bag anti-static? Is being anti-static only a concern for bags and not boxes?

If the glue code doesn't exist, then you can check gestalt gestaltFindFolderAttr to see if FindFolder is available. The glue code is mention in https://bitsavers.org/pdf/apple/mac/developer/MPW/MPW_3.2_Toolbox_Interfaces_and_Libraries_199107.pdf That says FindFolder is in Interface.o but I...

Do the files have correct creator/type codes?

The topic of this thread is also discussed at https://68kmla.org/bb/index.php?threads/possible-to-get-the-saved-instruction-address-at-interrupt-time-in-a-time-manager-task.49705

For posix in classic Mac OS, there's the GUSI library (Grand Unified Socket Interface) https://68kmla.org/bb/index.php?threads/multi-threaded-network-app-development-on-the-68000.47084/

I would probably write a script to handle the conversion between the git repository and the classic macOS share. - Conversion between Mac Roman and UTF-8. Git doesn't like Mac Roman and CodeWarrior doesn't like UTF-8. - Conversion between CR and LF. Git requires LF for proper diffs and merging...

More info: google DTE vs DCE. DTE (Data Terminal Equipment ) is computers, printers, terminals. DCE (Data Circuit-terminating Equipment or Data Communications Equipment) is modems and other data communication equipment. So the null-modem or cross over cable can connect two DTE devices without...

Yes. A modem cable would be used to connect a modem to a Mac. A null modem cable is used to connect a Mac to a Mac. I guess an eMate would be in the Mac category. Check the continuity. https://forums.macrumors.com/threads/serial-app-to-old-world-of.2429025/post-33239745

A monitor with no sense lines might appear as not connected (sense code 7, extended sense code 0x3f = 11 11 11). This might not matter if connected to a graphics controller that is not from a 68K Mac or PowerPC Mac. The sense lines are used for DDC/CI and EDID on newer displays. Maybe you need...

Is the serial cable a null-modem cable? I think that's the same as a serial printer cable (Image Writer II) where the Rx on one end is connected to Tx on the other. It's the kind of cable you can use to connect two Macs together. After selecting the correct cable, you need to make sure both...

My AllRez project (for Mac OS X) can get VCP info. https://github.com/joevt/AllRez Maybe you can dump the info for your display and post the results here?

SysEnvRec sysEnv; OSErr err = SysEnvirons (1, &sysEnv); sysVRefNum of SysEnvRec is a working directory ID, not a volume reference ID or a directory reference ID. The currently running System file is always open. So you would get the file reference number (probably just kSystemResFile), and use...

So the IBM 5155 has an amber CRT for displaying NTSC but it works for non-NTSC in a SE or SE30 and the SE30's CRT can do NTSC using the 5155 CRT module (which is the circuit that controls the CRT and not the CRT itself). That means there's no real difference between a CRT for composite and...

googled this: https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Parallel/Interactive%20Structures%20PKASO/

Without a diode, the only multi resolution modes available are for VGA and Multiple Scan 13" or 14". The latter requires a line from sense 2 to sense 1 in place of a diode with ground on sense 0. If you have just a ground on sense 0, then it's 640x480 67Hz only.

Correction: To debug multi-boot on B&W G3, use this: dev / " " encode-string " AAPL,debug-bootpathsearch" property