New Scan "Understanding OSI Floppy Disk System"

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tanteju
Posts: 12
Joined: Mon Dec 24, 2018 12:28 am

New Scan "Understanding OSI Floppy Disk System"

Post by tanteju » Mon May 13, 2019 8:57 pm

I've cleaned up some old moving boxes from some decades ago. Was about to throw them unopened away, because do you really need something in a moving box you have not touched for 30 years?

I've found this booklet and scanned it for Dave.

Maybe someone finds it interesting.

Update: Could not upload the 27 MB scan. Fixed.
Attachments
1982 OSI Floppy Interface.pdf
(1.8 MiB) Downloaded 81 times

MK14HAK
Posts: 343
Joined: Wed Mar 16, 2011 1:49 am
Location: New Zealand

Re: New Scan "Understanding OSI Floppy Disk System"

Post by MK14HAK » Tue May 14, 2019 1:58 am

Thanks for this tanteju. However the document is barely readable. Is there an issue with your scanner ...
600RevB:16K,2MHz,64x32,470,CEGMON
SuperKit:502,540B,542B,CEGMON, 8" and 5" FDDs
Cards:PE IO,6522 D-A-D, AY3-8910,ProgramGraphics,Color,UK101
WIP:HexDOS,FDD Emulator

nama
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Re: New Scan "Understanding OSI Floppy Disk System"

Post by nama » Tue May 14, 2019 3:25 am

That's great, but as Mike mentioned, quality is lacking.

2P (1mhz 32k) - 502 + 8k + CEGMON + garbage collector fix BASIC, D&N MEM-CM9 + 24k, 540 (mono), D13 + Gotek
4PMF (2mhz 24k) - 505, 540, 527, D13 + 5.25" + Gotek
Superboard RevD - CEGMON
Spares - 2 x 527, 1 x 527 [600, 610, D13 boards]

tanteju
Posts: 12
Joined: Mon Dec 24, 2018 12:28 am

Re: New Scan "Understanding OSI Floppy Disk System"

Post by tanteju » Tue May 14, 2019 6:49 pm

I see it. That's the result from compression. The original 28MB file is readable.
If someone could download it here https://www.dropbox.com/s/fjs4hxxdm5d38 ... e.pdf?dl=0 and post on the page.

Mark
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Re: New Scan "Understanding OSI Floppy Disk System"

Post by Mark » Thu May 16, 2019 7:30 am

Here is a converted monochrome version about the same size (1.6MB) that may be more legible.
I increased the DPI, sharpened, converted to 1bit & compressed in PDF with CCITT compression, all with the power of XNView. I think it gets a little muddy, but its not too bad for the size.

Thanks to tanteju for the original!

-Mark
1982 OSI Floppy Interface1.pdf
(1.64 MiB) Downloaded 82 times

waltermixxx
Posts: 118
Joined: Sun Feb 03, 2019 10:31 pm

Re: New Scan "Understanding OSI Floppy Disk System"

Post by waltermixxx » Thu May 16, 2019 8:23 pm

looks great, thanks for the effort. :) definitely a good balace of quality and size. :)
very much appreciated. :)
Turning into quite an OSI Junkie (HTFDTH?) Superboard II REV B-40K, 9600b, HC-05 Bluetooth, Superboard II Rev D, C4P rebuild- 502, 542c, 540B. :)

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