- QUADRA 650 MAC VGA ADAPTER INSTALL
- QUADRA 650 MAC VGA ADAPTER PRO
- QUADRA 650 MAC VGA ADAPTER CODE
- QUADRA 650 MAC VGA ADAPTER ZIP
How long do you think those caps can keep the computer running after you yank the power cord on it (however big, fat and physically large they may appear to be to your eyes)? Milliseconds at best.
QUADRA 650 MAC VGA ADAPTER PRO
Now compare that example with the capacitors in the power supply of a Mac Pro computer. These caps can keep the circuit alive for a long time because the circuit attached to those caps sips very little power in the first place. There are certain types of capacitors called “memory capacitors” that keep clocks or memory alive (for several days or weeks, until the capacitor runs out of juice) when the main power is cut. If you are dissatisfied with that layman’s terms explanation, think of it in terms of a load on a capacitor. They run dry very quickly because the CRT is maxed out in brightness. Because of that, it grabs all the available juice it can find in the electronics powering the CRT until they run completely dry. It works because you have the juice flowing into the CRT maxed out (full brightness) and when you yank the power cord the CRT desperately is searching for more juice to keep itself alive. Now the CRT is discharged and you can pry off the suction cup with a screw driver.
QUADRA 650 MAC VGA ADAPTER ZIP
Use ZIP Drive to Transfer FilesĪ color CRT won’t fit inside a Classic case. If you have any problems, contact me and I’ll dig in and see if I remember what I did! I still have the original setup, so I should be able to test things. That’s all I can remember off the top of my head. It assumes a 640×480 display, and this setup uses the native Mac resolution of (something like) 512×348.
QUADRA 650 MAC VGA ADAPTER CODE
The emulator I was going to run needed to have a bit of code changed. It’s the same thing you have to do to use a PiTFT display. There should be instructions to do this on the Web. You have to point it to the second framebuffer though. If I remember correctly, the GUI should run. And I don’t have time right now to do this. The problem with this is the timing of the Mac display is a little wonky – I don’t know if it’s possible without a bit of delay circuitry. That would give you a normal framebuffer, and let you see the bootup messages etc. I’ve not updated the project since it would be better to use the DPI interface on the Pi instead of the combination of PCM and PWM. You might not have to change the kernel module, but might be able to use the gpio utility to remap pin functions. This project also assumes a Pi model B, and the PCM port pins have changed starting on the B+. The Pi foundation keeps old versions of Raspbian available on their site, so this shouldn’t be a problem. The kernel API has changed so much since then that the kernel modules won’t compile any more. From MincePi:Ī word of warning – that project won’t work unless you use the same Raspbian version as used in the project. This is probably beyond my ability, but this guy wired a Pi’s composite video output to a Mac CRT. So I need an old Apple, Disk Copy, and the image files.
“You would use Disk Copy 4.2 or 6.3.3 in order to make sector-copied floppies from disk images (the Make A Copy button in version 4.2, or the Make a Floppy command under the Utilities menu in 6.3.3).” So you need an old Apple – but not too old – to write the disks. The boot images are easy enough to find, as are 800k disks (that’s 720k disks for PCs), but you need an Apple floppy drive to write 800k on those 720k disks the floppy drives for PCs – and all the USB floppy drives – can’t write at “ variable speed” like the Apple drives do. Getting boot disks for this is not so easy without another Apple with a floppy drive. Monitor/screen dimensions: 7 3/8 x 5 7/8 or 7.5 x 6 for simplicity. Your little Mac will be happier with the slim 7.0.1. For these computers it has much lower RAM and disk requirements than 7.1 or 7.5, and it supports most programs that require System 7. Many of these models may not come with a hard drive, and for those floppy-only Macs I recommend System 6.0.8, because it is the latest system designed to be realistically useable in a floppy-only environment.įor these Macs with a hard drive, I recommend System 7.0.1 for general use.
QUADRA 650 MAC VGA ADAPTER INSTALL
I’d really like to install a Raspberty Pi in this.