Re: Sidam Asterock wont coin up

From: vectorlist-steve <vectorlist_at_arcadehacking.com>
Date: Thu Nov 01 2012 - 20:10:20 EDT

Long sad story but my 9100 floppy drive had failed (caught fire!) and
the hard drive went out a few weeks later. The timing of the two events
could not have been worse. So, I custom downgraded several 1.44 floppy
drives to a fixed 720k capacity using various brands for which I could
find schematics. I can now boot the Fluke 1.4 utility disk and format
the replacement hard drive successfully using any of the replacement
floppy drives I created.

The problem now is that when I attempt load the Fluke 9100 software it
will load the SYSFIL1V6 disk but fails to read a file on the SYSFIL2V6
disk. I can skip the file and process the remaining disks but the unit
will not work as it is missing some key operating system files from the
SYSFIL2V6 floppy that can not be retrieved. I believe if I could get my
hands on a clean SYSFIL2V6 image my problems would be solved.

My replacement floppy disks including the working utility disk were
created using the images from your web site. I tried images from other
sources as well but the binary images were identical to yours and
probably from the same original source. I have used SAMDISK, TELEDISK,
IMAGEDISK and a Linux based variant with the same results of a bad
SYSFIL2V6 disk. I have also tried various settings including a
hideously larger interleave to ensure the 9100 had enough time to
process the previous sector before the next one spun into view. Media
was created on actual 720K floppies I had been hording as well as 1.44
floppies wiped with a demagnetizer and reformatted as 720k media with
the high density hole covered.

I don't want to clog up the list with the fluke 9100 issues so I will
send you an email later and we can take this offline. If I can end up
with a proven set of media, I will create updated image files and share
them with Andy for the community.

On 11/1/2012 3:36 PM, Andrew Welburn wrote:
> I'm sorry if I've forgotten the details, do you need a whole suite if disks to do a complete build?
>
> Do you know if your floppy drive is ok with HD disks? (They are formatted to 720k, but some drive types just won't read them)
>
> Andrew Welburn (mobile)
> www.andys-arcade.com
>
> On 1 Nov 2012, at 22:03, vectorlist-steve <vectorlist@arcadehacking.com> wrote:
>
>> Any change of getting a copy of the those pesky Fluke 9100 floppies? I still need a working set to reinstall the software mine after the scsi drive falied. :-(
>>
>>
>> On 11/1/2012 2:16 PM, Andrew Welburn wrote:
>>> That's fantastic :)
>>>
>>> I will send the owner a new rom and see what happens, it will be a week at least as he's on holiday right now :)
>>>
>>> Thanks for the hack, it would have taken me quite a while longer to look at it myself, with no guarantee of success :)
>>>
>>> Andrew Welburn (mobile)
>>> www.andys-arcade.com
>>>
>>> On 1 Nov 2012, at 20:22, vectorlist-steve <vectorlist@arcadehacking.com> wrote:
>>>
>>>> Below is the Asterock free play patch which required only the sidamas.2 rom be modified for the hack to work. The code has been successfully tested in mame with a handful of plays and it is functional. YMMV on actual hardware so let me know if you encounter an issue and I will take a second look.
>>>>
>>>> The sidamas.2 rom is the only rom which requires modification and is mapped between 0x6800 and 0x6BFF on the Asterock hardware.
>>>>
>>>> Old Code:
>>>> 0x68ED LDY $6F ;// credit count is stored at 0x006F
>>>>
>>>> New Code:
>>>> 0x68ED LDY #$02 ;// load y register with value of 2 credits
>>>>
>>>>
>>>> Using your favorite hex editor, modify the sidamas.2 file beginning at offset 0x00ED and replace the following two bytes:
>>>>
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Received on Thu Nov 1 20:10:37 2012

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