Jump to content


  • Content Count

  • Joined

  • Last visited

Everything posted by Trash80toHP_Mini

  1. Trash80toHP_Mini

    Apple Sound Chip (ASC) - Did anything utilize the synthesis?

    Thanks for that link, great read. Dunno if Apple advertised it as such, but at its announcement, the mags touted the Quadra 630 and its LC040 offspring as Multimedia Macs. edit: the MPEG media card was an add-on, not a computer and the TV/Tuner Video Systems were also expansion cards, so that may have gotten around the "sosumi barrier" to litigation as they weren't selling the "computer" as multimedia?.
  2. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    Can anyone take and post some really high resolution pics of both sides of the Micron Xceed 306, please? It doesn't support internal grayscale. In stock form, the only resolution it supports is 640 x 480 with 8-bit on an external monitor using Sync on Green. It appears that much of the work has been done to reverse engineer this particular card. Tweaking it so as to create an internal grayscale only card appears to be a real possibility. Dunno, but it's definitely an approach to explore.
  3. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    I searched "xceed" in the MacUser archive from January 1989 thru January 1991 w/o finding a single peep about internal grayscale. Until that point they appear to have been selling inexpensive, unaccelerated SE/30 PDS cards for external 640x480 and 1024x768 displays alongside a lineup of NuBus cards so uninspiring as to be entirely missing from LEM's NuBus Video Card page. Micron started advertising Xceed Memory Upgrade Kits in the MacUser August 1989 issue and began advertising VidCards in the November issue of that year. Things stayed pretty much the same until they listed a NuBus Card capable of 1152x870 in their November 1990 MacUser ad. It'll be interesting to find the SE/30 Internal Grayscale announcement or a review of any of their cards. BTW, it would seem Micron is still rolling right along in the memory business out in Boise. Crucial is one of their trade names. I wonder if anyone has been working there for thirty-odd years?
  4. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    Interesting: https://vintageapple.org/macbooks/pdf/Micron_Technology_Xceed_SE-3010-78_1989.pdf So the SE/30 3010-78 supports 1024x768? What's the timeline of Micron Technology's 030 PDS product lineup? Which models support internal grayscale and which don't?
  5. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    That's what I was thinking/hoping. As I try to get across below, the only thing about the EXCEED card that really requires cloning is its ability to sync with the A/B and substitution of its output to drive its proprietary neck board. The rest of it is A/B switching its output from internal grayscale resolution to its function as a mediocre VidCard driving an external display. Much of the legwork has been done in dlv's project. In a quick review of the topic I found Balrog's post: "https://archive.org/details/MicronXCeedTechDocs — you may have to click "Show All" under Download Options." @Gorgonopsand I had a bit of a back and forth going about just about everything I barely understand and I'm grateful for his lessons. I dragged in a tangential discussion about developing for 030 PDS as a simpler approach than going straight to NuBus, which puts discussion there right smack into this thread. The most useful thing I brought up was probably using the Macintosh II Video Card (aka Toby) as a design example and pointing out the in depth documentation of it in the Designing Cards and Drivers for the Macintosh series. I'm going to posit here: A - the external only XCEED card is an 030 PDS implementation of the NuBus Toby card as its output is the same as the 640x480@8-bit Grayscale Card; LEM B - the Internal GS XCEED card implements the ability of the Macintosh II High Resolution Video Card to output the 512 x 384 resolutions for driving the later Apple Displays that are missing from the TobyCard. But the XCEED version was tweaked to match the 342 vertical line resolution of Compact Mac video. LEM Thankfully, that card's default setting is 512 x384***** which makes sense as coming up in 640x480 would be useless in the case of a system configured with the smaller display. Im thinking the same must be true for the XCEED card defaulting to internal, no? So tweaking the Internal GS driver shouldn't be necessary for doing an internal only clone? Schematic, driver and DECLROM info for Toby are in Apple's Developer Docs, but I've yet to find PAL formula listings for the Toby card. I believe they're out there on the web, if not somewhere in Apple's Developer series that I've yet to run across. I can't imagine that dumbing a Toby card down to run the SE/30 512x342 internal display would be an insurmountable problem? As Toby constitutes the XCEED card's external monitor support function, adding external support of the same spec, if not identical in implementation to that of the XCEED's would be easily enough done in phase 2? **** Macintosh II High-Resolution Video Card: New Features
  6. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    Ignore this post, move to quote tag disaster corrected version below.
  7. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    I'm making the point that it might not even be POSSIBLE to clone the EXCEED without substituting an available RAMDAC of far superior performance. We'd be tying down floating signals redundant to the internal grayscale, function, using only I/O required. The additionaal function is held in reserve for future development of the Alpha platform. I find it had to imagine a RAMDAC so limited as that on the EXCEED is an available part. IOW, we likely won't find available parts crappy enough to slavishly recreate the card in its over 30 year old form. VRAM/Video Memory types currently availability is another source of curiosity for me. @trag what do you think about parts availability issues? I'd say implement for the least (internal gs only) while making choices along the way intended to support the most, whatever that's determined to be during the course of pulling off step one.
  8. I've suddenly got another oddball SE VidCard to mess with on the bench. The SE Adapter board is what got me, what else did they use this thing in? It's a two row subset of the SE PDS, which doesn't mean much because there's not a whole lot going on in the center row of the SE's 68000 PDS. I'm wondering if they made 030 PDS Adapters for ithis card? Lots of research in the MacUser archive coming up. The signal listing on the breakout cable connector was the other thing that got me. IIRC these cards supported two resolutions depending upon which of the two monitors it was driving. The PTO is curious as well as the IC on the adapter. Having PAL logic on there is the third thing that got me. Is it the missing logical link between the 68000 and 68030 PDS implementations? Anybody seen drivers for this puppy anywhere online?
  9. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    No expert here, but I don't think so. May need to disable a hardware check or tweak the driver to default to internal? You're still cloning the "entire" card, but simplifying the implementation by removing a sizeable portion of the schematic, hence traces, gates and cable drivers for the external display. That can be picket up at later date in the original form as a second step. Dunno if an 8-bit RAMDAC is even available as a new part, so it might be necessary to substitute a far more capable part. I think the notion could be most clearly illustrated by graying out much of that cable mess needed to support the external monitor. It might be reduced to just a triangle or even a simple V, dunno, the wiring harness is a separate schematic. edit: if a 24 bit RAMDAC capable of supporting something on the order of 720p fallback part is needed as a substitute. Adding more VRAM to support higher resolutions or even the original's 640x480 in 24-bit becomes a possibility.
  10. Trash80toHP_Mini

    Quicksilver zip-drives

    $50 Quicksilvers of almost and kind are getting thin on the ground if you ask me.
  11. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    What I'm saying is feature creep would be anything more complex than getting a clone of just its internal grayscale function up and running. Anything aside from that singular basic function is feature creep. Sending any signal outside the box is a second step and is certainly is not the EXCEED card's strong suit. 680x480@8bit is pathetic, not really worth pursuing on its own IMO. If what's wanted is a "real" copy of that card, that would be another thing. KISS, get the internal grayscale part done first and worry about the rest . . . if and when.
  12. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    SE/30 PDS has three interrupt lines, so could support an internal grayscale only video card, an external output video card and a network card. The limitation is that the PDS is is only (capable?) spec'd for driving two TTL inputs as opposed to the three needed for such a combination which would be further complicated by acceleration. A baseline graycsale card for internal monitor support only would be the first step as I see it. Output to drive an external display in color would be the second step, whether done in the XCEED A/B switch method with its limited 640x480 resolution or by implementing two nearly identical setups for driving both at the same time as an added feature. XCEED card's external refresh rate is the sticking point as I see it. If it's not 60Hz, I'd go the second route after first developing the internal grayscale card. More and better pixels compatible with a modern panel would be the way to go. The wider 640p standard scales perfectly to 720p and the 1080p common denominator of current panels.
  13. Trash80toHP_Mini

    Tanzania to Tanzania II upgrade

    Neat stuff, I thought I was the only one who talked to myself in threads like this? Thanks for linking it from the 6500 eBay tangent.
  14. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    That's not really impossible, but move the WiFi to a 10bT dongle and forget about Video Out, that one is definitely feature creep IMO.
  15. Trash80toHP_Mini

    SE/30 Xceed greyscale adapter cloning thread

    That was quick! Cloning only the internal grayscale portion ought to hit the spot for the vast majority of prospective customers I would think. One piece at a time? /Johnny Cash
  16. Trash80toHP_Mini

    Takky power supply mod. Help please!

    Dunno, but here's another diagram from the .jp CC hackers: Maybe looking at it a different way might help?
  17. I've started trying to identify the components on the IDE Zip250 to SCSI adapter board on a very interesting Winstation product: WFS2E1W13. The board appears to be a discrete component IDE to SCSI bridge implementation that could be equivalent to the ASIC on ACARD adapters? Assumption would be that some of the ICs must be programmable logic, but the board might be a good model for development. Programmable logic IC could be dead ends, but where they fall in the schematic might define the underlying architecture. If anyone recognizes any of the ICs offhand, please post them. Major ICs: U2 - What should be a stickered ROM U25 - qlogic - FAS209 - SCSI 10MB/s SE 8bit U5 - Intel - S0C31BHI - ????? - appears to be a stock part equivalent to same part number from Mfr. TMS - anybody have info on that company or the chip's function? Searching came up dry so far. Thinking here is that this could be a first step in creating a SATA to SCSI board? SATA to PATA chips seem readily available or if not, could be easily harvested from very inexpensive adapters. This is so far out of my league as to be ridiculous, but someone might take an interest?
  18. Trash80toHP_Mini

    Mystery Icon?

    I'll assume they were functional prototypes, case parts were texturized, but what a gawdawful kluge! I really don't think Paladin could have gone into production with the innards in this form. HDD has been backed up, cloned and got it to boot the IIsi! Still documenting the teardown on and off as the fancy hits me.
  19. Trash80toHP_Mini

    Mystery Icon?

    The bottom right icon is new to me, has anyone seen it before?
  20. I've got a 160MB SCSI HDD I need to back up, it has 7.1 on board. I set up a CF card as 8.1 boot drive on the 6x00 BenchMac. Tied everything together and the 160MB HDD blossomed to 286.7MB when dragged and dropped. WTHeck?
  21. Trash80toHP_Mini

    5th Generations Jukebox Five Floppy Disk Mechanized Hopper

    pcamen filled us in, it's just a couple of hooks supporting the hopper. Seems like a lot of stress to put on the brittle front bezels of this day and age.
  22. OP was about developing something better than SCSI2SD in terms of throughput using IDE SSDs or IDE adapted SATA SSDs or something like that. Using a laptop slotloader in a SCSI Mac is but a side issue. 4MB/second is about what, Mac II to Quadra era SCSI on the Mac?
  23. HAH! makes sense. That's too bad, good for single device only "chain" for all practical purposes in a Mac w/CD then? I guess you could use the Optical Adapter (ATAPI) with it. Dunno about flashing the BIOS, but some SMD rework could test your hypothesis. I imagine reading the ROM/BIOS in a bare nekkid state and making copies might be a good way to go. Methinks you're right, different BIOS for low level product differentiation? Sticker peeling and ASIC ID check would have to be the first step. A slower version of the ASIC would be a better way of differentiating product levels. Could also be a fuse burn in the same part as Moto disabled failed test FPU sections to create perfectly good LC040 versions along with intentional disabling for product level differentiation. just missed edit window: was correcting the second Ultra-2 to Ultra-3 and the dates to 1996 and late 1997 when the hourglass flipped. Also found ATAPI acronym in the description on your box.
  24. Trash80toHP_Mini

    Powerbook 100

    Definitely reflow the connector/logic board joints before powering it up again in that case. Also check for chipped tip on the A/C adapter.
  25. There's this project from 2008 on OpenCores that was active for a week and a half before they suspended it. That's not too promising. - Synchronous Data Transfers un to 4MB/sec is even less promising. That would be more on the order of pathetic Macintosh SCSI 1 implementations? Addonics appears to have distributed a 96k modem for PC from the OEM(?) that made my PowerBook specific 56k modem. Same very cool case, compatible with the 56k modem's ADB PTO, PowerBook Charcoal and all. I'd be very surprised that you'd find anything but an Acard logo under that Addonics sticker. Model number "7722" between Addonics and Acard is nearly the same, but the LF suffix combined with LVD spec on the IBM aCard IDE to LVD-SCSi Bridge Adapter AEC-7722 give me pause. Have you got the SCSI Spec on yours? LVD was introduced in Ultra-2 which appears to be compatible with LVD 1.2 and HVD ≥5 voltages while Ultra3 appears to be LVD 1.2 only. What's the date on your adapter? 1994 to 1996 would be Ultra-2. I wonder about the IBM/Acard version dates, if made after 1996 it could very likely be Ultra-3 and low voltage only and so incompatible for my purposes? Wondering here about pre-1996 Mac voltage compatibility and optional G4 series SCSI card? Wikipedia Curiouser and curiouser. Got linkage to the less expensive "PATA" adapters? What was the acronym for IDE with optical drive support? Drawing a blank again.