Dan_Zehme@DGC.MCEO.DG.COM (08/02/90)
CEO summary: I just recently moved from my own (very system dependent) command processor replacement to ZCPR 3.3. One thing that I noticed is that commands such as ERA, REN, PROT and any other program that work to modify the directory can be made to work a lot faster than they already are. From what I can tell, ERA will first scan the directory using the search and next functions, and the delete each file individually with the delete command. This requires that the directory be scaned once no matter what, and once for each file to be deleted. The faster way for the simple ERA would to be scan the directory using the search and next functions, but when I directory entry is found, print it, change the user to E5 and then to a BIOS write. BIOS is already set to the correct DMA, track, and sector because of the read to get that sector there in the first place. This way the directory is read once (very fast). For more complex operations such as querying for verification, read the directory once, perform the queries, and then scan a second time, changing only the files that the user has allowed to be changed. Has anybody thought to do this? How about getting it changed (I might be able to do it myself, but I need info on getting this tested and distributed)? Thanks. dan_zehme@bsn.ceo.dg.com