Recent content by croissantking

  1. croissantking

    Upgrading Powerbook 190 to 68040 with FPU?

    Yes, those are the correct part numbers for the K63H and L88M masks. E42K is MC68040FExx (no suffix) E31F is XC68040FExxM Genuine chips also have their speed rating printed under the part number eg ‘66/33 MHz’. Here are some examples: Yes, this is correct - no FPU. A valiant effort OP -...
  2. croissantking

    BlueSCSI V2 access LED affected by DaynaPort

    No, it's not like that at all. Part I used is TDK PS1240P02BT. Here's a video I created of my ZuluSCSI, it sounds the same on my BlueSCSI V2 PowerBook editions:
  3. croissantking

    BlueSCSI V2 access LED affected by DaynaPort

    Hey, the piezo buzzer works fine. There's not much I can say about it – it's a cheap solution that does the job if you want audible feedback for disk access.
  4. croissantking

    Powerbook 180 & Tunnel Vision

    I’ve seen this on a 180 under System 7.1, when you disable sleep in the PowerBook control panel it shows a warning about image persistence.
  5. croissantking

    MFM Floppy Drives?

    The schematics indicate the Beige’s MFM floppy footprint is connected directly to the Heathrow chip. There is no empty controller chip footprint like on the Tanzania board.
  6. croissantking

    A Tale of Three SE/30s - Restoration and Upgrade Log

    That bodge wire is from factory.
  7. croissantking

    Apple Quicktake 100 and 150 Recapping and Servicing Guide

    Here is a comprehensive PDF guide I put together that will be useful for anyone wishing to take apart their Quicktake 100 or 150 for recapping. I am maintaining a BOM on Mouser. I wasn't sure if this should be an Article or Document, hopefully I made the right choice.
  8. croissantking

    Flickering screen

    Have you recapped the analog board yet? I’ve seen that when I had a poor flyback anode connection to the CRT.
  9. croissantking

    powebook 1400c freezes when I have an HDI-30 cable plugged in

    Please don’t hot plug SCSI devices - it’s not designed for that and you could do serious damage. BlueSCSI won’t run off the back of a PowerBook as it doesn’t provide the termination power needed. You might be able to plug in a USB cable to provide power that way?
  10. croissantking

    Quadra 630 Boards and Misc

    Looks like it has pads to take up to a total of 3MB.
  11. croissantking

    Macintosh SE/30 - Activity LED Amber

    If it’s not the stock drive you’re using, maybe the voltages are too low from the pin header? The next thing to try would be another LED, I guess.
  12. croissantking

    Decoding the ImageWriter II/LQ LocalTalk Option card NVSRAM chip

    Just to say, as an IWII owner I’m very excited to see this project in development. Is the plan to combine the features of both the AppleTalk card and the memory expansion card that were originally available?
  13. croissantking

    Macintosh IIsi, Recapped, quite chime, no display.

    Better than a logic board fault, I’d say!
  14. croissantking

    Macintosh IIsi, Recapped, quite chime, no display.

    The sound issue might just be a bad connection to the internal speaker. The design the IIsi uses - sprung contacts under the logic board - is notorious for being flaky. Try inspecting and cleaning the contacts as well as the pads on the logic board which press against them.
  15. croissantking

    Feasibility of a custom PERCH card?

    It’s entirely possible but a big undertaking, not sure who out there would be interested in designing such a card. In the meantime, if you have a Rev. 2 Personality card, you already have an unpopulated USB footprint that can be added on to :) It seems that Apple had planned to have this...