On Tue, 4 Sep 2001, Ruud Baltissen wrote: > Studying the source I noticed that the 1540- and early 1541-version had a > routine to check the state of the data- and clock-line to see if the drive > had to load and start a certian program. > - Does anybody know why it is removed? Probably because of user confusion? > - Could anybody think of a nice use for our sake? If I remember correctly, this boot-up check would have an equivalent effect of issuing the "&" command, which loads and executes a file "&,usr" in the drive. The only somewhat useful application of the "&" command I've seen is a utility somewhere on FUNET that makes it possible to create subdirectories on the 1541. The program works by writing one-block "&xxx,usr" files to the disk and by using other tracks than 18 for the subdirectories. When the "&xxx" command is executed, the drive switches to the subdirectory "xxx" by loading the file "&xxx,usr" that initializes certain variables in the drive memory. I think it would be much more useful if the computer had a boot sequence like the C128 does. By the way, the 1581 tries to boot from a file. I think the file name is something like "copyright 1986 cbm". Marko Message was sent through the cbm-hackers mailing list
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