bchurch@oucsace.cs.OHIOU.EDU (Bob Church) (07/09/90)
I'm posting this to clarify an earlier message about using my Unidisk and //c. I've received several nice notes about it but I must not have stated my problem very well. It's not really much of a problem. If I leave the internal drive empty the //c will check it first and then boot from the Unidisk as it is supposed to do. I was just looking for a way to bypass the few seconds of waiting while it checks the internal drive. Not a big thing really, it's just that I've been tuning this computer up for so long that I'm running out of ways to improve it :-). ******************************************************************** * * * bob church bchurch@oucsace.cs.ohiou.edu * * * * If economics isn't an "exact" science why do computers crash * * so much more often than the stock market? * * bc * ********************************************************************
dlyons@Apple.COM (David A. Lyons) (07/10/90)
In article <1519@oucsace.cs.OHIOU.EDU> bchurch@oucsace.cs.OHIOU.EDU (Bob Church) writes: >I'm posting this to clarify an earlier message about using my Unidisk >and //c. I've received several nice notes about it but I must not have >stated my problem very well. It's not really much of a problem. If I >leave the internal drive empty the //c will check it first and then boot >from the Unidisk as it is supposed to do. I was just looking for a way to >bypass the few seconds of waiting while it checks the internal drive. Not >a big thing really, it's just that I've been tuning this computer >up for so long that I'm running out of ways to improve it :-). No problem: Make a 5.25" floppy with block 0 containing the following in the first 4 bytes: 000:01 4C 00 C5 Keep this floppy in your internal drive, and this little piece of code (which is JMP $C500) will transfer control to slot 5 faster than waiting for the system to just give up. -- David A. Lyons, Apple Computer, Inc. | DAL Systems Apple II Developer Technical Support | P.O. Box 875 America Online: Dave Lyons | Cupertino, CA 95015-0875 GEnie: D.LYONS2 or DAVE.LYONS CompuServe: 72177,3233 Internet/BITNET: dlyons@apple.com UUCP: ...!ames!apple!dlyons My opinions are my own, not Apple's.
rond@pro-grouch.cts.com (Ron Dippold) (07/11/90)
In-Reply-To: message from dlyons@Apple.COM >>from the Unidisk as it is supposed to do. I was just looking for a way to >>bypass the few seconds of waiting while it checks the internal drive. Not >No problem: Make a 5.25" floppy with block 0 containing the following >in the first 4 bytes: > >000:01 4C 00 C5 > >Keep this floppy in your internal drive, and this little piece of code >(which is JMP $C500) will transfer control to slot 5 faster than waiting >for the system to just give up. I would suggest making that 00: 01 AD E8 C0 4C 00 C5 which should turn the 5 1/4" drive off before booting the 3 1/2" drive. unless the //c shuts it off automatically when the 3 1/2" engages. i know you need to do it on a //e. UUCP: crash!pro-grouch!rond ARPA: crash!pro-grouch!rond@nosc.mil INET: rond@pro-grouch.cts.com