MacOSMonkey
Well-known member
Yes - overkill. Haha! It's a nice product, but it should have 5V capability and a frequency selector.
I'll get back to you on that, its on my todo listYes - overkill. Haha! It's a nice product, but it should have 5V capability and a frequency selector.
These exist, but I don't know how usable they are in terms of quality, cable lengths etc :I got the 40 & 50Mhz for $1 each. It would be nice to have a mini-LCD with an intuitive selector - maybe 3 digits and an M/K, etc.
Interesting, is Video Driver Interface part of baseline Slot Manager/NuBus or the extended NuBus90 spec?Early SuperMac cards, like Spectrum/24 1.0 implemented minimal slot manager support. In later SuperMac boards, there was the addition of "VDI" (Video Driver Interface) support, which theoretically allowed for certain additional/external configurability in conjunction with SuperVideo 3.0. However, the support also had to be in the firmware, and the earlier boards absolutely did not include it.
If "Video Driver Interface" is something specific in that name, no. However, the video driver routines required are sometimes referred to as the "video driver software interface" (DCDMF3 p147). They did evolve over time; while the basic functions are the same, the numbers of selectors grew over time. The new ones, which I have seen called in 7.5.3 and 8.1 but not 7.1.1, includes cscSetDefaultMode, cscSwitchMode or cscSavePreferredConfiguration. There was a cscSetMode previously. IIRC, cscSetMode select among video resources where cscSwitchMode is meant to be more flexible - but I'm not 100% sure, as I didn't implement resolution switching, only depth switching, and for me both are pretty much the same.Melkhior have you got anything on that subject or general observations on this insanity?
Gone. Did someone here bag it?there's a Spectrum/24 III ... up on Mercari
Neat - have any left?I used to make these things :
Two SMD clocks in the form factor of a DIP14 that you can toggle between.
I have bare boards and some clock speeds. I moved house so don't know where anything is I'll have a look and dig them out / see what speeds I have.Neat - have any left?
Ooo... know *that* feeling!I moved house so don't know where anything is
Thx - just drop me a PM if you find 'em - no rush.I'll have a look and did them out / see what speeds I have.
From: https://wiki.preterhuman.net/SuperMac_Technology interesting company info.Spectrum/24 v. 1.0 - undocumented
___ Board (c)1988
_____ ROM 1.0 (c)1989
_____ ROM ___ (c) ____
Pictures:
Can you read out the timing data for SVGA/800x600 from your board for me. Hoping to plug it into the setup for my board.I dug through my old junk boxes and was able to find and recommission a Spectrum/8 Series II ("Spectrum C") board (8-bit, 1024x768) with the original 1.0d14 ROM ("d" stands for "development," as you may know). It has 3 oscillator sockets, comes with 30.24Mhz (Apple 13") and 64.0Mhz (SuperMac 19" 60Hz) oscillators pre-installed. It is customizable based on built-in configs of: 640x480 (13", NTSC, Multisync), 1024x768 (SuperMac 19"), 768x576 (PAL), 800x600 (SuperMac 16" and Seiko), etc., with a max width of 1024 and max oscillator frequency of 64Mhz. Multisync mode uses 24Mhz, 16" uses 50Mhz (SuperMac) or 44Mhz (Seiko). I popped in a 55.00Mhz oscillator in the spare socket, the board detects it, and it shows up in SuperVideo. The monitor is an Apple Multisync 15 that supports SVGA/800x600, so I just need a 40 or 50Mhz oscillator to make it work at 60Hz or 72Hz vertical.
You mean the one I cropped out of the photo?Nice, thanks, posted! It was on the LEM list. PreterHuman has @LaPortas ColorCard with an incorrect picture. Can you take a shot of the Series III board that goes with your DaughterCard pic, that one's already up.
Back on topic:
Can you read out the timing data for SVGA/800x600 from your board for me. Hoping to plug it into the setup for my board.