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MONO is meant to be a 280x192 black & white image instead of 140x192 color image. The MONO and HGR and DHR examples are using a naive bits to color conversion method which is not what real hardware would do. A single 25% brightness DHGR pixel should be half the width of a HGR color pixel and a...

Does opening the file twice give an error or the same fsRef number or a different fsRef?

Each paramblock should have it's own flag - you can make it part of a metaparamblock which can hold other info about the queued I/O such as timer info or whatever. Does PBReadForkAsync return an error as the function result? I mean, does it return noErr all the time? I wonder if the second...

Why not set a completion routine in the parameter block, then use that to set a flag or to fixup ioResult? Your wait loop is not waiting for a specific time period - it depends on how fast it can printf 10 times. I don't see where you kill the I/O when it's taking too long. Then you reuse that...

How bricked is it? Do you have a PC or Intel Mac that can run DOS or Windows? nvflash.v5.95.0.1-win can work in Windows. Which Mac ROM did you try? Do you have the original PC ROM? Did you copy the soft straps and memory info from the PC ROM to the Mac ROM? Does the Quadro FX 4500 have 256 MB or...

This comment: //WR4 = register pointer set to WR4 should be: //WR0 = register pointer set to WR4

Other thread: https://68kmla.org/bb/index.php?threads/transformers-for-homemade-localtalk-phonenet-dongles.47052 Go to https://developer.apple.com/library/archive/navigation/#section=Platforms&topic=macOS Search for Serial. Read all the info. TN1018 mentions MIDI but I don't think SE/30 has the...

I don't know. USB has more CPU overhead than a PCI NIC? Old World Macs had 10Base-T. New World Macs got 100Base-T. Power Mac G4 (Gigabit) and later got 1000Base-T.

The Sonnet Tempo Trio problem was mostly solved at: https://68kmla.org/bb/index.php?threads/the-great-gazelle-pci-hack-thread-part-2.38360/post-467825 There's a patcher: https://68kmla.org/bb/index.php?threads/the-great-gazelle-pci-hack-thread-part-2.38360/post-467844 And a video...

A USB 3.0 card uses XHCI. You need USB 2.0 EHCI or 1.1 OHCI for PowerPC Mac unless you want to try and port a XHCI driver (there exists a third party open source XHCI driver for Mac OS X but I don't think it's appropriate for Mac OS X 10.4 or 10.5 but I haven't tried). USB 1.1 is 12 Mbps (≈1.2...

Seems like Buckshot is not saving DLO images correctly. In my source test image, the diagonal line reaches the bottom line. In the DLO result, the diagonal line doesn't reach the bottom line. It seems the image was stretched horizontally so that only 40 of the 80 pixels are represented. It looks...

My program is correct. Change line 50 to write the line number as a character between A and X (1 to 24) 50 FOR X = 0 to 39 : POKE 1024+OFFSET+X,Y+1 : NEXT What is the size of the binary created by buckshot? If it's 24 * 40 = 960 then it's not including screen holes. It might be saving the file...

The COMPUTE! magazine issue I referenced is at internet archive and contains machine language for calculating HGR line address.

If you load the GR image to $2000, then this should be able to copy it to $400 (if my math is correct): 10 FOR Y = 0 TO 23 20 AB = INT(Y / 8) 30 CDE = Y - AB * 8 40 OFFSET = CDE * 128 + AB * 40 50 FOR X = 0 to 39 : POKE 1024+OFFSET+X,PEEK(8192+OFFSET+X) : NEXT 60 NEXT But it's really slow...

There's some info at https://en.wikipedia.org/wiki/Apple_II_graphics Basically, the graphics pages have screen holes between some rows. The screen holes for HGR aren't used for anything so you can overwrite them without issue with a BLOAD. The screen holes for GR are used by various things...

I tried Mac OS 8.6 in DingusPPC but got an error "DrawSprocketLib--DspGetVersion" not found. I don't have a working Mac OS 9.1 yet for DingusPPC. I can try it in SheepShaver or on a B&W G3.

There's a build of my flashrom fork at https://forums.macrumors.com/threads/question-how-powerful-of-a-graphics-card-will-work-in-a-beige-power-macintosh-g3.2303689/page-32 but I haven't tried it with the -p satasii option. Of course, no PCI method is going to work for a flash chip that needs a...

I think @dosdude1's flashrom for Linux on PPC Mac should work for Debian. My flashrom fork should work in Mac OS X (PPC and Intel) but I need to make some updates to make my source code buildable on PPC Mac OS X 10.4.11 again. I'll work on it today. I don't think anyone's used it yet to flash a...

Check the permissions? ls -l vmacMountable Does the mounted volume have the FUSE volume icon? Does "Get Info" of the mounted volume show "Format: Unknown (macfuse_hfs)"? I'm using macOS 12.7.2 Monterey. My HFS disk images have file extension .dmg and exist on a partition that has "ignore...

I ported FlashROM to PPC Mac OS X. See the previous page (page 5) of this thread.