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Francois Dion
R&D , , , , -Artist, Coder, Data Scientist, Entrepreneur, Hacker, Mentor, Musician, Polyglot, Photographer, Polymath
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Francois Dion 11h
Replying to @bsletten
IBM machines 10 years later still weighted over a ton. They just didn't see transistors appearing on the scene.
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Francois Dion 11h
Replying to @bsletten
Pretty sure I have that copy. Definitely rings a bell. Popular mechanics of the 1940s have great illustrations and artists depictions.
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Francois Dion Oct 22
Replying to @generativist
Small victory, time to call it a day!
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Francois Dion Oct 22
Replying to @generativist
Does not compute, man.
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Francois Dion Oct 22
Replying to @cyberat2600
King's Quest, at least I and II support composite 16 colors. Several other Sierra On-Line titles supported the mode. And Ultima II, published by Sierra (the rest would be published by Richard Garriott's own Origin Systems)
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Francois Dion Oct 22
Replying to @cyberat2600
On CGA composite and on the Apple ][, you could display a lot more colors than the standard, due to NTSC artifacts. In CGA, that allowed an effective resolution of 160x200 with 16 colors. You could also use simultaneously a Hercules card along the CGA/composite for a dual display
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Francois Dion retweeted
Michael DeHaan Oct 22
Looks like I have some extra cycles to consult on some projects coming up, if you think you'd like to work together on designing something interesting, send me a message!
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Francois Dion Oct 21
The nice thing with the Centris 650 is that it'll take 32MB 72pins DIMMs, bringing the total RAM to 136MB (4x32MB+8MB on motherboard). I plan to test that tomorrow, and bump the cache. This is going to be a nice '040.
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Francois Dion Oct 21
Replying to @Ludiusvox
And it is quicker than a hard disk (and will be more gentle on the power supply)
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Francois Dion Oct 21
Replying to @f_dion
Started over, this time doing a full System 7.5.3 install (I'll update to 7.5.5) from the cdrom. The Centris 650 came with 7.1. And we are back! Also notice 40MB of ram (my Mac Plus had a hard disk that size!). 4MB+4MB+8MB+16MB DIMMs. But that's 32MB. There's 8MB on motherboard
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Francois Dion Oct 21
Replying to @f_dion
I set up the scsi2sd device on my laptop, using a Usb cable. Flashed the first partition with an OS image, just to make sure my settings work. And the Macintosh Centris 650 is booting from the SD!
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Francois Dion Oct 21
Replying to @f_dion
The floppy disk is back in. Power is through the flat ribbon cable on Macintosh computers, unlike PC floppy drives.
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Francois Dion Oct 21
Replying to @f_dion
Floppy disk carrier & autoinject drive (bezel doesn't have recess for fingers to push floppy in, the drive actually pulls it in). It also has a weird plastic sleeve to protect from dust. LOL, the drive was full of dust. Toothbrush, IPA, lithium grease & silicon lube to the rescue
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Francois Dion Oct 21
Replying to @cyberat2600
CF to IDE vs SD to IDE, any thoughts on that? I'm running a CF in the Apple IIgs, but a SD to IDE in my retrogaming desktop. I just have a lot more SDs laying around than CF (which I need for my pro digital cameras). As far as I know, the IDE bus is the limiting factor for both.
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Francois Dion Oct 21
Replying to @peterrenshaw
There are pinouts diagrams for AAUI vs AUI in the Asante user manual
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Francois Dion Oct 20
Replying to @f_dion
But that's OK, cause I had the right adapter in my parts bin box (regular PC parts). Got to reinstall the floppy drive next (it was so dirty, never seen something like that before). Note on the floppy, early Centris 650 like mine have autoinject drives. Later have manual FDHD.
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Francois Dion Oct 20
Replying to @f_dion
Mismatch of the power connector...
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Francois Dion Oct 20
Replying to @f_dion
Mounted on the hard disk plate from the Mac Centris... (screws under the plate)
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Francois Dion Oct 20
Replying to @f_dion
So I am going to use this: a SCSI2SD adapter with a mount for 3.5" drive slot. With a 16GB SD so I'll have 4 x 4GB partitions. , meet 2020.
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Francois Dion Oct 20
Continuing on the Centris 650, I tried a narrow SCSI drive (50 pins) I had (a 4GB drive, which is the max a partition can be on a Mac of that era), but couldn't get it to work.
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