1/23/2026 at 12:47:11 PM
Old scanners were SCSI, which made me wonder if you could use them as boot devices, if you could stuff the scanner driver and OCR software into the BIOS. Might be easier now that we have uEFI.by mrweasel
1/23/2026 at 4:34:20 PM
That is ridiculously fantastic idea!Shame I used to have an SCSI scanner but I already disassembled it for parts.
One can write a simple bootloader, which reads bytes printed on a paper sheet to memory then boots it. Something like: black (0), white (1) or long rectangle (1), short rectangle (0). Wonder about the storage capacity of the A4 paper.
by yesturi
1/23/2026 at 8:46:29 PM
Use some finer pitch graph paper and people could author "boot sector code" by literally coloring in the little squares with the necessary bits!Would be sort of like paper tape.
by ddingus
1/23/2026 at 11:33:50 PM
Pepperidge Farm remembers when high-school computing classes used Scantron-style optical mark cards...https://commons.wikimedia.org/wiki/File:HP_Educational_Basic...
by nxobject
1/29/2026 at 7:09:36 PM
Cool! My school used a variation of these for a while.scantron... a name rising from the mists of time, lol
by ddingus
1/23/2026 at 4:16:51 PM
Forth it up on a middle aged PowerPC Mac!by bobmcnamara
1/24/2026 at 4:02:01 PM
This one boots from the parallel port: https://github.com/climatex/BootLPT (more details here https://boginjr.com/it/sw/dev/bootlpt-86/)by romforth
1/25/2026 at 12:46:57 PM
Not all old scanners were just SCSI; there parallel port and proprietary adapter card scanners too.Some cameras and printers also had SCSI interfaces: Opex MPS-40 mail sorting camera and NeXT Color Ink Jet SCSI.
And don't forget SCSI network adapters (NICs).
I'm wondering if there were a SCSI mouse and/or a SCSI to RS-232 adapter.
by burnt-resistor
1/23/2026 at 4:00:30 PM
Even older scanners were raw ISA piped over a centronix cableby estimator7292
1/23/2026 at 8:44:20 PM
Someone needs to give this a go!Fantastic IDEA seconded!
by ddingus
1/24/2026 at 4:21:00 AM
OCR? Just have it read out binary. Then it can boot by looking at a punchcard.... or a lot of them.by sandworm101
1/23/2026 at 1:59:06 PM
[dead]by hackomorespacko
1/23/2026 at 9:42:19 PM
Thanks, I've taken the liberty of fixing the typo. (GP used to say "old scanners where SCSI")by dang