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Author Topic: GVP Autoboot ROM not found  (Read 1486 times)

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Offline EdFluxTopic starter

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GVP Autoboot ROM not found
« on: June 08, 2009, 04:43:16 AM »
My GVP Impact card (1st series) either just came back from the dead by itself or it didn't like one of my A2000s. Anyways, burned a copy of GVPSCSI 3.15 to a 27c128, popped the EPROM in to the right socket, and set the jumper. The install software still keeps telling me that no Autoboot ROM is installed. The image won't fit on a 27c64. I would try to use a 27c256, but I don't know how to write to the lower/upper parts of an EPROM yet. Any suggestions?
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Offline rkauer

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Re: GVP Autoboot ROM not found
« Reply #1 on: June 08, 2009, 05:21:54 AM »
I'm using an EPROM on mine GVP SCSI HC+8 (same as yours, IIRC) with version 4.15 (latest version). Works OK with a 27C128.

 The problem can be related with the speed of the chip. Try again with a faster one (120ns or better).
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Offline TjLaZer

Re: GVP Autoboot ROM not found
« Reply #2 on: June 08, 2009, 05:55:04 AM »
Quote from: EdFlux;509911
My GVP Impact card (1st series) either just came back from the dead by itself or it didn't like one of my A2000s. Anyways, burned a copy of GVPSCSI 3.15 to a 27c128, popped the EPROM in to the right socket, and set the jumper. The install software still keeps telling me that no Autoboot ROM is installed. The image won't fit on a 27c64. I would try to use a 27c256, but I don't know how to write to the lower/upper parts of an EPROM yet. Any suggestions?

The image is 48k right?  Did you convert it to a 16k file for burning?  I think thats what you have to do, not sure if that was done.   It should work with that ROM.
« Last Edit: June 08, 2009, 05:57:05 AM by TjLaZer »
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Offline EdFluxTopic starter

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Re: GVP Autoboot ROM not found
« Reply #3 on: June 08, 2009, 08:34:17 PM »
Quote from: rkauer;509916
I'm using an EPROM on mine GVP SCSI HC+8 (same as yours, IIRC) with version 4.15 (latest version). Works OK with a 27C128.

 The problem can be related with the speed of the chip. Try again with a faster one (120ns or better).


I have the Impact HC without the RAM option. Turns out the EPROM I used is a 200ns part. As far as shrinking the file down, my software supports Intel HEX files. I don't know if the software automatically shrinks it for me, but i've never had to do that before. Anyone know how to write to both banks of a 27c256 using a Willem? I've googled to no avail.
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Offline doctorq

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Re: GVP Autoboot ROM not found
« Reply #4 on: June 08, 2009, 08:47:15 PM »
Just FYI.

I have a GVP HC2+ that I tried to upgrade with the 3.15 ROM. The ROM works fine in a GVP HC8+, autoboots and everything, but when installed in the HC2+ it doesn't work. It keeps GURUing, and doesn't boot. Using the 3.15 BindDrivers driver on a boot floppy, everything works as it should. I just wish the scsidev.device would have supported two drives :-(
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