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Posts posted by kreats

  1. if you are looking at open source 68000 to 030 accelerators, have you considered adapting the terriblefire TF536?


    It works in the Amiga 500, 2000 and Atari ST right now, and probably is a lot more well-tested than this one.

  2. Here's the link to the EEVBlog video about cheap PCBs

    JLCPCB Prototype Inspection

    I'm really not underestimating costs.. apart from the connectors, this is about as cheap a board as you could ever possibly hope to make.


    I have also ordered smaller boards on oshpark for literally a couple of dollars delivered.


    child abuse.. come on now that's just being silly. No more so than with everything else you own.. it's mostly automated anyway.

  3. I really disagree. There are many many examples of far more complicated boards for the hobbyist market being sold right now, presumably at a good profit.  Check some of EEVblog's videos.. he got 4 layer boards the size of a motherboard made for $20 each - delivered in 5 days.  Getting the board also assembled for cheap isn't out of the question.


    Anyway, if the PCBs are released we will see.. if they aren't it's just another nail in the macintosh coffin. I really don't know why you are fighting me on this.


    and the discussion is relevant to this thread also, cause a manifestation of the same problem - no updates in 4 months? It's dead, Jim

  4. There are practically 0 expensive parts other than the connectors on the adaptors. The PCB itself can be ordered for a couple of dollars each. This would be an extremely cheap and profitable board to sell - but nobody is doing it. 


    After a year or so of no movement, I think it's time to make intentions clear.  If the project is abandoned it would be nice to know. I'm happy to buy a few (at least 3), but they have to be made available.


    As it is, I don't see why would anyone invest the time designing a board when people will say it was stolen from community research, or with the threat of the original design undercutting them.


  5. Someone has the ability to push out PCBs and they don't do it - we've seen actual boards being distributed to a select few.. all that is required is to repeat the process.


    And if it's too hard/time consuming, give a license to someone else! And if they don't want to even do that - release the PCB files and give instructions on how to order them.


    I just don't get why people sit on these things. They may as well have never been done if nobody can actually get at them. And then we are back to $200 boards from Japan.


    Ask yourself - if it is so straightforward could you make a board using the info from that thread?


    PS: I already have a Twinspark, so this isn't self interest

  6. On 9/30/2018 at 4:39 AM, CC_333 said:

    And the Custom ROM SIMM. BMoW is in charge of that now (known as the ROMinator II or some such), but it was Dougg3 who developed and released it initially.



    Yep I bought some of those from him! 


    There are a few completed projects just crying out for release - and it's getting to the point where classic macs will die out as a hobby soon without some momentum.


    • The twinspark repro board
    • The greyscale board for the se/30
    • IIfx ram sims

  7. You'll have to sign up with them yeah - could just use dummy info I suppose. It really is the best way of getting the design out there though - you can order pcb's shipped worldwide for a couple of bucks - which is way easier and cheaper than making them at home.


    From what I gather, it has to be submitted as either:

    • an Eagle .brd board file
    • a KiCAD .kicad_pcb board file
    • a .zip file containing Gerber CAM files

    Plus there are some guidelines they like you to follow


    I've never uploaded a design before - but I've ordered a few PCBs of interesting products from people who have made their designs available (mainly for game consoles) with good results.

  8. joethezombie: I like your general ideas, but selling simple memory chips on a SIMM socket should not be something anyone should be upset about or feel that they can protect. They are not selling the programmer.


    If you want to support dougg you know where to buy it (I did).. but if you want to buy something cheaper you have that choice too.

  9. I think he's wrong. The IIGS isn't a better machine.


    The original 128k should have been 512k, and the mac 512k could even be used by people today for productivity (e.g. write a letter or a book). Not so the IIGS.


    e.g. Microsoft word 5.1 is pretty close to modern versions.


    Game music also isn't a big deal.. he shows lemmings but that sounds fine on mac.


    Booting up and using GSOS is a massive chore compared to MacOS if you've ever tried it - even with SCSI and ram expansions.


    At the time - the massive library of Apple II software would have made the IIGS a reasonable choice though.

  10. Well there is some source code included and the guy was the engineer responsible - so probably the last chance to ever get detailed info about the card.


    Having the source for the drivers might make a workalike possible at least. There is also a disk there that says "Bart code" -  might even include the HDL code for the chips.


    PS: care to share the resources you have?

  11. You can spend a lot of money if you want to. Off the top of my head:


    easier upgrades: scsi2sd or ide-scsi adapter, rominator, 128mb, floppyemu, ethernet (scsi-ethernet,localtalk-ethernet or internal card)


    harder upgrades: recap the logic board, multi-card upgrades (req. iisi adapter/twinspark) e.g. daystar powercache 030 + ethernet or micron xceed + greyscale + ethernet. These probably require upgraded power supply (artmix sells one for $$$) or recapped power supply and/or recapped analog board.


    Peripheral upgrades: apple branded external cdrom like 300e/600e, appledesign speakers, sc20c (apple branded). ADB/PS2 adapter so you can use an optical mouse - or a kensington trackball (original ball mouse is pretty much unusable).

  12. Well "historical" and "classic" are two different things. 128k is historical (but really is just a crippled 512k), se/30 is a classic. If I could only have one computer, I'd rather have the pimped out se/30.


    It's probably worth about $2000 atm wth all cards anyway (030/040,xceed greyscale,ethernet,iisi adaptor/twinspark,etc).


    Owning one actually shows you know a fair bit about macs too.

  13. Well I think they have considered working on those things (MMU and FPU).


    All of these issues would be present no matter how it was done - may as well leverage the work of others.


    Could have different "modes" of compatibility - you could even have a real 50mhz 030 onboard to switch between. A lot of older software doesn't run properly with 32bit addressing on anyway.


    I'd quite like a 12mb 68000 at 100Mhz. One some software was ported to it, it could be quite capable