From: Nicolas Welte (no_spam_at_x1541.de)
Date: 2005-02-07 20:52:46
Hi Rainer,
Rainer Buchty wrote:
> my brother owns an SFD1001 which he likes to put up for auction on eBay.
> For the lack of an IEEE488 interface, all he could do for checking was
> powering up the thing and watch the dual-color LED flash. It goes:
>
> red-red-green, red-red-green, off
>
> Does that refer to a ROM problem? According to the PetFAQ 2x (and 3x)
> flashing indicates a problem with the (presumably) OS ROM.
My SFD's power LED never goes off. It's either green (normal) or red (error).
During normal power up, this happens:
power activity duration
red red 2s
green off 0.5s
red red 0.1s
green off forever
When I remove the low DOS ROM, this happens:
power activity duration
red red 2s
<do>
green off 0.5s
red red 0.1s
green off 0.5s
red red 0.1s
green off 0.5s
red red 0.1s
green off 2s
<loop>
So normal behaviour would be 1 flash, bad DOS ROM 3 flashes of power and
activity LED.
Nicolas
--
-> My Commodore hardware projects and the X1541 Shop at http://x1541.de <-
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