Apple IIGS ROM03 with "Turbo->28"

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Apple IIGS ROM03 with "Turbo->28"

Hi, all

Any one has idea on Apple IIGS ROM03 with boot screen first line "Turbo->28" rather than "Apple IIGS"? Is it an early ROM03 unit, developer unit or?
I couldn't find any information from the web.

Thanks,
Michael

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I think that is a dev system

I think that is a dev system for ROM-03. Is there any chance that you can dump those ROMs for us to inspect?

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This is a necro thread

This is a necro thread revived by a spam bot. The OP hasn't been active for a few months. A quick google search shows a more active thread from 2018 by the op at a different forum with more info and pics. You have to joint that forum to see them though.  

http://www.vcfed.org/forum/showthread.php?64405-Apple-IIGS-with-Turbo-gt-28-boot-screen

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nick3092 wrote:This is a
nick3092 wrote:

This is a necro thread revived by a spam bot. The OP hasn't been active for a few months. A quick google search shows a more active thread from 2018 by the op at a different forum with more info and pics. You have to joint that forum to see them though.  

http://www.vcfed.org/fo

Skimming that, at least I seem to be correct. 

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Apple IIGS ROM03 with "Turbo->28"
Timelord wrote:

I think that is a dev system for ROM-03. Is there any chance that you can dump those ROMs for us to inspect?

The two ROM chips are 27C1001 with hand-written stickers and I just have a Data I/O 29 with 512K RAM. If I have the right tool, I will share the images. The logic board has a part number of  607-0275-03. It has a stamped datecode 8915 and has no barcode label.

 

 

 

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