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  1. Today
  2. I kind of thought it went without saying/repeating that if you actually want to feed *anything* from your SuperMac card into the compact monitor you'll need something like a Micron neck board (or requisite hacks to the original analog board) *and* the necessary hacks to the horizontal drive outputs. If you have a sufficiently flexible multisync monitor lying around you can *prototype* the mode on that, but ultimately you're nowhere without doing some actual soldering. Find the data sheet for a CRT similar to the one in a compact Mac and figure out what the drive voltage is for the intensity pin leading to the electron gun, and from there look for a high speed analog op-amp that can convert the 0-0.7v range that's standard for VGA-era analog monitor inputs into what the tube wants. Presumably that is what the Micron board has on it, unless said op-amp is on the card itself.
  3. dochilli

    Macintosh SE FDHD, Hard Drive Migration?

    Yes, a SCSI2SD can be used to save your HDD. For an external connection you need an adapter (50pin to 25 pin) and a cable for SCSI2SD 5.0 (25 pin sub D; 1:1). The version 5.1. can be delivered with an extra installed 25pin connector. Then you only need the cable (25pin sub D (and perhaps a power adapter(?), but I think power can be delivered by the SCSI port of the SE directly; for a mac plus you need an external power adapter)). 5.0: https://www.itead.cc/scsi2sd.html Adapter; https://www.itead.cc/scsi2-50pin-to-scsi1-db25-adapter.html External enclosure: https://www.thingiverse.com/thing:1131419 I have 4 SCSI2SD 5.0 and I am very happy with them. You can change the SD card and boot different systems or you install up to 4 SCSI Drives on one SD-card. 2GB of memory is a lot for classic macs. 5.1: https://store.inertialcomputing.com/SCSI2SD-V5-1-p/scsi2sd-v5.1.htm You can also use an external SCSI ZIP or a JAZ Drive. But they are often expensive and sometime are delivered defect. I would not use 1.44 MB disk to save my HDD.
  4. Trash80toHP_Mini

    Compact Mac Video Timings Needed for SuperVideo Input Parameters

    Ah! But I might as well buy a 24mhz crystal just for the fun of it . . . unless you've got a better suggestion? You haven't said if it might be fed to the GS neck board thru the A/B gatekeeper? Good question? I don't think I've ever tried to lower the resolution, why would I as a dyed in the wool pixel junkie? In a quick check, neither resolution switching nor QuickDraw acceleration are mentioned in the manual, so I'd say not offhand. It was designed to drive SuperMac 16" and 19" 1024x768 displays which were almost certainly fixed at the 64mhz standard clock frequency. The card was bundled with a 30.24mhz crystal to drive two of Apple's fixed frequency displays. The card dates from 1989 and was geared toward panning around virtual desktop resolutions up to 4096x1536! Slap a 24mhz crystal on it to support MultiSync monitors at 640x480 or a 14.31818mhz crystal for NTSC RGB at 640x480. That last sounds very good indeed now that I've found it in the docs, I was afraid it might not support a low enough clock to output the Compact Mac's 512x342. Dunno, the card always sounded pretty awesome to me given that I was mired in B&W, albeit in the 1182xwhatever range at that time. Pathetic is in the eye of the beholder. In 1989 I think this was something to behold. By the second rev of the Spectrum/24 series, not so much. The market had moved beyond big virtual desktops to multiple big displays for CAD and DTP had begun to require QuickDraw acceleration. It'll do for this. ______________________________________________________________________________________________________ I'm getting waaaay ahead of myself here, but is there currently a RAMDAC type part available that's suitable to a GS/30™ card design? In the HDMI output NuBus VidCard thread, the VRAM side of things sounded practical enough, but the back end was a formulaic/done deal kinda thing for digital output from an FPGA. How would the analog side break down in terms of available, off the shelf components for pushing just a single, variable intensity analog feed to the GS neck board? Sounds like a strange beast?
  5. Hey guys, So I have this Mac II that I've had for eons, and it sat for about 8 years and the caps went bad. I can see some light corrosion here and there, including the legs of UB1. Anyway, it would not power on. One of the PRAM batteries was dead, I replaced both with 3.6V (they were 3.0V, I've read mixed things in different forums as to what voltage is correct). Still would not start. So I replaced all the SMD caps. It still does not start off the keyboard or back switch, but it does jump start and play the usual Mac chime. However there is no video and it does not try to boot anything. Would appreciate any suggestions on what to look at next. I did the battery replacement a long time ago, and then shelved the unit. For some reason I recall one of the batteries having its polarity reversed from the first one. No idea why that would be, given the positive is clearly marked on the same side of each battery on the silkscreen.
  6. elbaroni

    Baroni’s Collection

    Trag — a good point. Turns out SIM1 and SIM2 are Bank B, and SIM3 and SIM4 are Bank A. This is...less intuitive than it might be. Unfortunately it also means the broken SIMM socket is in the bank that has to be filled.
  7. Brett B.

    Performa 630 DOS issues.

    Sorry I couldn't be of more help. Please update this if you get it working - I am just short on time for playing with old computers this time of year and won't get to it for a while but I'd like to know what the fix is... it's gotta be some little detail we overlooked.
  8. Byrd

    Best macOS version for IIci?

    You should be able to pickup a Radius '040 accelerator for the IIci, or even a PPC accelerator if you spend time looking around for a good price. Accelerators for IIci machines are too niche as they only work in that machine, others will need an adapter so it wouldn't be a good candidate for a "modern" accelerator.
  9. Crutch

    Best macOS version for IIci?

    You can definitely run 8.0 on an 030. I’ve run 8.1 on my SE/30 with a Diimo 030 accelerator. You need a 32-bit clean ROM and a simple ResEdit hack. Instructions here courtesy of BMOW: https://www.bigmessowires.com/mac-se30-with-upgraded-rom/
  10. UnaClocker

    Best macOS version for IIci?

    I thought I saw somewhere that there's a hack to get 8.0 onto a 68030.. It's a shame there isn't an active community making modern accelerator boards for these old Macs like they do for the Amiga.
  11. UnaClocker

    Recapping Macintosh IIci?

  12. I was assuming your card if it were so equipped with the 24mhz crystal that's in your screenshot. If you don't actually have said crystal then I guess it's so much for that idea. As I've mentioned before, using a newer card that actually *does* have a programmable frequency generator for the pixel clock would totally eliminate these problems. It's actually kind of pathetic that the Supermac card only has a single crystal on it. I mean, I guess I'm kind of confused again; can you even change resolutions without changing crystals? (The manual kind of implies no?) At least contemporary SuperVGA cards that lacked programmable clock generators compensated by slapping more crystals onto the card where they could all be accessible at once. (It's kind of comical, actually, how many cans you'll find on really old VGA cards. Check this bad boy out. It's not even a particularly high-end card.)
  13. nickpunt

    Help identifying Lapis PDS card.

    Not the same but similar is this one on eBay: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F132580730811 I have the procolorserver 24 (I believe) for LC, has similar parts. Agree yours could be the 8. Look at my gallery to compare
  14. Trash80toHP_Mini

    Compact Mac Video Timings Needed for SuperVideo Input Parameters

    OMG that is just so ugly as to be beautiful on a 9" CRT. By displayable, do you mean from my card in a NuBus Mac or something that might be done as an alternate resolution on a GS Card, thinking the former? Might there enough play in vertical adjustment to square the pixels up into letterboxed wide aspect ratio goodness without releasing magic smoke? No joy on the lower frequency crystals. I've only got the 64mhz crystal for the big SuperMac monitors. I wonder how much crystals go for from parts suppliers, they're all over eBay in 15.6MHz modules for whatever.
  15. Yesterday
  16. mattsoft

    Macintosh SE FDHD, Hard Drive Migration?

    I would get a SCSI2SD, prep it with an SD card of appropriate size and connect it to the external SCSI port. Format the "drive" and copy everything over. Remove the spinning HDD and mount the SCSI2SD inside.
  17. godfatherq8

    Portable & SCSI2SD Questions

  18. godfatherq8

    Portable & SCSI2SD Questions

    thanks a lot for the replay and your help
  19. trag

    Resurrecting IIci

    If you can save the little RTC chip, then you're probably okay. ROM contents are here: https://www.prismnet.com/~trag/Firmware/IIci/ And can be programmed into Flash, EEPROM or EPROM chips. The metal rectangle looks like the remains of an oscillator, which should be easily replaced. Or for that matter, just get a ROM inator II and remove the ROM SIMM jumper. The only other critical components there is the big square chip. The RTC and MDU are custom Apple chips and not replaceable absent stealing from a donor board. The other stuff can be replaced with off the shelf stuff.
  20. godfatherq8

    SCSI to SC cable

    Hi thanks for your replay.I search and find a lot of SCSI 2 SD adapters do you know which one will work with the macintosh portable ?
  21. godfatherq8

    SCSI to SC cable

    Hi thanks for your replay.I search and find a lot of SCSI 2 SD adapters do you know which one will work with the macintosh portable ?
  22. Awesome!!! This looks so cool! If only these sort of things existed back in the day...
  23. You know, if you really want to get your hands dirty here's a lame suggestion: the only thing the monitor really cares about is vertical and horizontal frequencies and the widths of the sync pulses. It doesn't actually care about dot clock. (within reason, anyway.) If your video card has a 24Mhz crystal installed you could just fake up a video mode that otherwise fits your monitor but has a different horizontal resolution. For laughs I went back to the modeline generator and since 24mhz is about half again larger than 15.6mhz diddled around with the numbers for a 768x342 pixel mode. Came up with this: Which results in this: Xfree modeline: Modeline "768x342" 24 768 790 794 1078 342 342 346 370 -hsync Obviously this mode would result in non-square pixels on a 4x3 CRT but I think there's pretty good odds it would be *displayable* on a compact mac monitor. (hsync/vsync frequencies are within tiny fractions of a percent of correct and the hsync/vsync pulse widths are also very close to specifications.) If you want to try messing around with this before locating a 15.6mhz crystal, well, there you go.
  24. Bolle

    Techworks network card drivers for SE/30

    It should work with the standard driver that comes with the system software. The card has to in the machine while the system software is installed otherwise the drivers won’t be installed.
  25. Bolle

    SE/30 Garbled screen

    Could be caused by an intermittent connection of an address line on one of the video address muxes (chips UA8 to UD8) I had this exact symptom on one of my SE/30s and it took me ages to find because all address lines buzzed out fine on the first two tries but it was open when I went through everything a third time. Also could be one of those chips is on its way out.
  26. I'm looking at ordering a set of capacitors for my Macintosh IIci. I found the reference picture to find all the capacitors, but I'm not sure about the SMD capacitors, I've only really worked on the more common types of capacitors. Anyone have a list for these capacitors for what I need? Side note: I'm almost thinking about created a database for the machines that I work on.
  27. Hi, I have a lot of old Mac computer here at home, I usually remove the 1/2 AA battery before putting them on storage, but It seems that I forgot this one. It looks in very bad shape. I start cleaning as much as I can and it start to look better. Can you guys help me resurrecting this computer ? I need to source some new replacement component. But which one ? Can the MMU and the Roms be saved ? (Dishwasher ? ) I need to find the little round component that goes off near there Y5 - 32.768 Khz. Is a clock (quartz ?) I'm waiting for your comments. Have a look at the pictures .... Thanks, Pierre
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