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  1. Tiptoeturtle

    Identify this Board!

    The contents of the text file ReadMe for Irwin XL/20 and XL/25 "Excelerators": I appear to have the Excelerator XL 20/25 CDEV on one or more CDs, although not the equipment running to transfer the file other storage at present. I have not yet determined what is on (or survives on) the Orion...
  2. Tiptoeturtle

    1983 Lisa brochure

    If you cannot afford, or cannot find, a Lisa, now at least (about 33 years later) you can read the brochure. Interesting (to me) to note that it used a 68000 processor, it could be fitted with up to 1 MB of RAM, and it weighed about 48 lbs (22 kg).
  3. Tiptoeturtle

    A fascinating printer: The Star SJ-144MC

    The description on the box claims it is laser quiet (i.e. as quiet as a laser printer). The product code on the ribbon is T144-CL. The T could be an abbreviation for Thermal (as in thermal transfer) and the CL could denote colour. This sounds similar to an Apple Scribe printer, which was also...
  4. Tiptoeturtle

    Neat Macintosh Wood Case

    A wooden roll-top case might go well with Mac SE and SE/30 models or anything else with horizontal grilles (I am thinking of the grille pattern matching roll-tops), with a sliding drawer underneath for the keyboard and mouse. The black Macintosh in the picture is more likely to be a plus, as the...
  5. Tiptoeturtle

    Identify this Board!

    Images of four pages of the book Macintosh Family Hardware Reference, relating to the Processor Direct Slot in the SE.
  6. Tiptoeturtle

    Macintosh SE Accelerator boards

    I made a 600dpi scan of the second page only, which produced an 8MB jpg file, and uploading that 8MB file into the gallery here three times produced the same error message "Upload skipped (Error code 500)" each time - although it should have worked ? So instead I uploaded the 600dpi second page...
  7. Tiptoeturtle

    Macintosh SE Accelerator boards

    This was originally published in MacUser 1988 March. MacUser also provided people who asked with a standalone printed version of the report (printed on thicker paper than the magazine was printed). The Prodigy SE is visible at the top left corner of the second page. Although this seems to be...
  8. Tiptoeturtle

    Identify this Board!

    I regret I do not have the video card / adaptor. I think the manufacturer should have included information about it in the Excelerator manual, and that way more people would have known about its existence and perhaps increased sales of it ?? But they didn't... I do have the 68851 though, and a...
  9. Tiptoeturtle

    MacConnection SIMM installation guide 1991

    I want one, where do you get it ? That one is a bit unusual in that it appears to be suitable for 6 bit SIMMs, as well as 8 bit and 9 bit SIMMs. Another thing for the wish list is a picture of a SIMM slot with metal bails (clips) rather than the common plastic bails (clips).
  10. Tiptoeturtle

    MacConnection SIMM installation guide 1991

    I would be interested to see a picture of what the SIMM tool is. This is the first I have heard of it. I don't need a digital version of the video, but would be interested to see it anyway, out of curiosity, as I have never had any opportunity to view it before now.  I have the booklet, but...
  11. Tiptoeturtle

    MacConnection SIMM installation guide 1991

        This guide was distributed to persons buying SIMMs from MacConnection (I think there was also a videotape available). This 1991 version covers Macs from the Mac Plus (circa [1986]) up to the Mac IIfx and Mac Classic (circa [1991]). It is about 40 pages long.   I do not know, and hence ask...
  12. Tiptoeturtle

    Identify this Board!

    The first image  is a scan of the back of the box for an Irwin XL 20 Excelerator, which shows a board that is nearly identical to the board pictured in the original posting. Judging by the numbering I can see, the board I have here may be one produced about 400 boards after the one in the...
  13. Tiptoeturtle

    Mac Classic not starting

    It could also be that the power switch itself mechanically broke.
  14. Tiptoeturtle

    Mac Classic not starting

    You might consider finding a second Classic-or-later compact model of Macintosh that is working and for sale, buying it secondhand, and swapping the hard disk from the inoperative computer into the operative one, then backing up all the data into a third (more contemporary model of) computer...
  15. Tiptoeturtle

    Just acquired a Macintosh SE. Some questions I have...

    In the original picture of your Mac SE you have a good picture of the ball lightning produced in it, does the Mac happen to come from Area 51 ? You may already know there is a hidden picture of the Mac SE development team in the SE ROM, and there is some way of activating (displaying) that...
  16. Tiptoeturtle

    Sony SuperDrive head spring repair

    Thanks for this. You could alternately try to feed a hollowed out short length of flexible plastic pipe around the fastening loop of the spring. The hollowed out flexible plastic pipe is the sort of thing you get when strip the insulation off the end of a small gauge piece of electrical wiring...
  17. Tiptoeturtle

    PowerBook 150

    It might be possible to disassemble the battery pack and replace the dying sub-component batteries. I do not know if it was true or not, but when I had a PowerBook 140 I remember the technician at the local apple dealership telling me that running a 140 with a dead (or missing) battery pack...
  18. Tiptoeturtle

    Floppy disk drive cleaned - still don't want disks

    Thinking back ten to twenty-five years... 1. The 800K drives use a stronger magnetic flux (if that is the correct term) than the 1440KB drives used to write information (I think...., this may seem counter-intuitive, but I think the explanation is something like to store more information on a...
  19. Tiptoeturtle

    Identify this Board!

    I still have most (all) of my correspondence with the makers of the Orion/Irwin in disk (text) files, which I carry around with me on a 64GB USB, along with most of my other correspondence and files going back to 1981. Unfortunately using a USB drive (and not having a Macintosh in Denmark) means...
  20. Tiptoeturtle

    Identify this Board!

    MacPeak Systems, Spyglass, Austin, Texas originally sold these cards for the SE as Orion accelerators (from about 1988 onwards). They were about $800. They then discontinued (or renamed) the Orion and sold the next version as the Irwin accelerator. Owners of the Orion could upgrade to the Irwin...
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