ChrisCwmbran
Experienced Member
Hi guys,
I have a problem with my Osborne 1b. When powered on it only displays a partial version of the initial screen:
When I press the RETURN key (with no floppy disk in the drive) the screen fills with "BOOT ERROR" messages but from the odd movements on the screen it appears to me that perhaps one of the 74LS series counter chips do with the screen isn't operating correctly however I don't know how to tell which.
Here is a video which might help:
I pressed RESET and RETURN again approximately 20 seconds into the video.
Thanks for taking the time to read this. Any help would be greatly appreciated.
I have a problem with my Osborne 1b. When powered on it only displays a partial version of the initial screen:
When I press the RETURN key (with no floppy disk in the drive) the screen fills with "BOOT ERROR" messages but from the odd movements on the screen it appears to me that perhaps one of the 74LS series counter chips do with the screen isn't operating correctly however I don't know how to tell which.
Here is a video which might help:
I pressed RESET and RETURN again approximately 20 seconds into the video.
Thanks for taking the time to read this. Any help would be greatly appreciated.