Meme titles aside, I could not be more excited to now own a Performa 575! This happened last week, as a result of an astonishing act of generosity by @JRL (who donated the 'body' of the Performa, which was in good shape but lacking a motherboard), and an excellent transaction with @hyperneogeo (who sold me a recapped Performa 575 motherboard). The fact that either of those things happened at all is pretty remarkable, but the fact that they both happened on the same day and locally (so no shipping was required) is borderline-insane. Our own @maceffects even reached out to me with an offer of a very-reasonably-priced Ethernet card for the Performa and I've already ordered a new SCSI2SD for it from @inertialcomputing, so it should be fully functional within the next week or so. I did perform a quick test (using the SCSI2SD currently attached to the Color Classic II seen above) and the Performa 575 runs like a champ:
If this (above) is the pivot SE 30 pinout, then l connecting 4 + 10 like with the Pivot IIsi (below, quoted from the above mentioned WTB: Radius Pivot IIsi cable thread) is obviously nonsense, since with the Radius pivot SE 30 only 4 is sense and 10 is 69hz vsync.
But what if I were to connect sense0 and sense1 (pin4 and 7)? Could this lead to the desired permanent landscape mode in the SE 30 pivot?
Not exactly. The Quadra 630 could take 196 megs (one 128 meg SIMM, one 64 meg SIMM, plus four on the board), and if you're running NetBSD or can write your own ROMs, you can get 260 megabytes in a Quadra 610 or 520 megabytes in a Quadra 650 / 800.
128MB is a hard ceiling for all of the 030 Macs right up through the IIfx. Apple hobbled every Quadra to 136MB with with a useless bank of 8M on the system board excepting the 900 and 950, which had the full four acres of 32pin SIMMs on their boards.
Cost and availability of 16MB 30 pin SIMMs would be what got me onto the 72-pin adaptation several years ago. I'd imagine, newer, higher density RAM ICs for 128MB might be surface mounted above and below the two acres of thruhole 30-pin SIMM sockets? Dunno, @trag is our memory boffin, he could figure out if we may as well shoot right past the 72-pin SIMM upgrade option?
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I guess it all depends on what people really want, as in terms of spending money on it? Purists may want the proprietary chips harvested from their dead board to populate a new design logic board that looks the same as the old in a sexy new color that you can't see anyway? I'd rather see some new possibilities opened up while we're at it. I'm not talking about featuritus as in add-ons, just about taking a more modular approach in the board design process. Think in terms of a layout blocked out for relatively easy rearrangement and adaptation to something like an SE/30 replacement board for the plastics of a dead Mac Portable, that's my notion, not Eleanor, but close.
The necessary parts and technology are in hand for a fully reversible, non-destructive SE30 Portable mod with a minimum of 640x400 on a perfectly fitting IPS panel.
One add-on though, a new format PDS card in this case, so to speak. Given @maceffects amazing developments based upon the Xceed 306-48, I don't see much difficulty in running the SE30 Portable's replacement panel at its native 1280x800 at a minimum of 16bit. A standard 306-48 build, its resolution trimmed down from 640x480 to 400 lines in 8bit color should work amazingly well as I currently plan. It's far better than 512x324 even in grayscale. Purists from either camp could knock it back to single bit and maybe even be turn down the backlight?
Maybe drop a RaspBerry Pi 6+ or better into the HDD Bay one day along with the SCSI2SD and browse the web at 1280x800@24bit at the press of a macro.
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