(Topic ID: 7260)

ROM burners - anyone got recommendations?


By DrAzzy

7 years ago



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  • Latest reply 7 months ago by G-P-E
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    #16 7 years ago

    I use a PP2. I program more ROMS in a month than most people will program in a lifetime. It's a good, solid programmer.

    But, the PP2 hasn't been manufactured for a couple years now

    5 months later
    #26 6 years ago
    Quoted from Kryzsky:

    Need some advice on programming, gave it a shot yesterday with no luck.
    -Bought 32 pin EPROM chips (ST M27C2001) 2Mb
    -Used a GQ-4x, software installed no problem
    -Placed the chip in the programmer, bottom position, locked it in with the little lever
    -Selected the manufacturer first, then model # of the chip
    -Blank checked, ok
    -Chose the new ROM, Demo Man L4 (398 Kb), programmed, took about a minute, ok
    -Verified, ok
    -Placed a sticker on the chip over the window
    -Installed in Demo Man, everything powered up, heard the chime but would not boot
    -Also programmed another chip with LX3 for Demo Man & and another with 1.4H for my Theatre of Magic, no luck with either
    What am I missing/doing wrong? Thanks!

    You're using the wrong part. You need a 27c040 or 27c4001. A 27c1001 will only hold the first 1/4 of the ROM image.

    You also need to unzip the binary.. and for the Tom 1.4H, you need a different security chip to use 1.4H

    #33 6 years ago

    This gets confused frequently.

    A 27c801 is a 1MB EPROM.
    A 27c1001 is *NOT* a 1MB EPROM

    There are 1024 KB in 1 MB.

    512 KB = .5 MB

    A 27c4001 is a 512KB EPROM.

    It's confusing, no doubt... but once you figure it out, you'll be OK
    1,048,576 27c080 (1024K)
    524,288 27c040 ( 512K)
    262,144 27c020 ( 256K)
    131,072 27C010 ( 128K)
    65,536 27512 ( 64K)
    32,768 27256 ( 32K)
    16,384 27128 ( 16K)
    8,192 2764 ( 8K)
    4,096 2732 or 2532 ( 4K)
    2,048 2716 ( 2K)

    Note: 2532 and 2732 don't interchange. They have different pinouts. Some boards use 2732s, some use 2532s, and some can be rejumpered to use one or the other.

    3 years later
    #51 3 years ago
    Quoted from Riptor:

    I do not recommend the pocket programmer III. It is flaky and their tech support is total crap. I had an issue where it wouldnt program 2732 after a software update. They insisted I was using bad roms even after telling them many times they were NOS ones that program just fine in other programmer. I ended up sending them a tube of them to "test" but never got them back or even heard a peep from them again.
    I also bought a rather expensive prom adapter to burn bipolar proms and it never did work.
    Buy the GQ-4X and you wont be disappointed. It will do everything from 2716 to 27C080 without an adapter. For old bipolar proms I use an ancient Data IO 29B. I have a second GQ-4X nib as a backup in case mine ever fails. I have burned thousands of eproms with mine...wore out the original zif socket I used it so much. New zif socket and its still kicking along.
    Currently running GQ4X on windows 7 64 bit.
    When using USB programmers you should always use a usb port on the rear of the pc. Many times the front ports do not supply enough current and you may have issues. I run external power on mine always, it just stays plugged in all the time.
    The software says it does not support 2532 but no worrys there. 2532 are what I use the most and I have never had an issue burning them with the GQ-4X.

    Ironically, I'm using an old PP2 with over 25k burns on it, and the original ZIF socket is still humming along fine.

    I've got 4 parallel PP2s and 2 USB PP2s. Never tried a PP3. I still run the PP2s under Windows 2000 because I've found it is the most stable OS with them.

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