dattier@jolnet.ORPK.IL.US (David Tamkin) (02/17/89)
In <2719@nunki.usc.edu> Alexander Liu wrote: | One simple and unsophisticated (therefore, not that dramatic) approach | to the speed-up problem is by using the 1541 fast mode. I remember | that the VIC-20 could make serial transfers 25% faster than the C-64, | that's why C-64's had such a hard time reading the old 1540 drives. | People who had VIC-20's could take advantage of this extra speed by | sending the user command 'uj' to the disk (I am not 100% percent sure | about this, I don't have my Disk Manual handy, but I think is fairly | common thing) uj is the DOS command to do a cold restart! The one to speed up to 1540 compatibility is ui-. ui+ slows it back down to 1541 speed for a C-64 with its screen on. (Mr. Liu remembered right that the C-64 can handle 1540 speed when its screen is blanked.) Yes, I typed it correctly. ui- to speed it up and ui+ to slow it down; you may find the sign assignment counter-intuitive. David W. Tamkin POB 567542 Norridge IL 60656-7542 | 12 Adar Rishon 5749 dattier@jolnet.orpk.il.us Jolnet Public Access Unix | GEnie: D.W.TAMKIN ...!killer!jolnet!dattier Orland Park, Illinois | CIS: 73720,1570 Anyone on Jolnet who agrees with me is welcome to speak up on his or her own.