Aside from the files bio.c and tty.c most of the drivers contained in these directories make no use of our modifications to the system. All drivers in 'dmr' have been rigourously tested. Those in 'unused' cannot be guaranteed to the same extent. The multitude of hp drivers are mostly different in configuration. cr.c Card reader driver for UNSW home grown buffered reader. crd.c Driver for standard DEC CR11 card reader. dj.c Will drive multiple DJ11's. Supports hardware silo on input. dz.c This DZ11 driver will handle Dial-in lines and will handshake with terminals that use Data Terminal Ready to control output, also supports silo on input. ei.c UT200 (modified) Emulator on DP11. Talks to our version of QUEBEC Export-Import in the best way. There are other ver- sions of this driver for DU11's and for the standard KRONOS (NOS) E/I; Although the exact version you need is maybe not here, it should not be too difficult to change our one. Tun- ing it up to your of Export is a different problem. see 'basserbatch' and 'unswbatch' directories. hp.c standard RP04 driver. ht.c TU16 Driver. kl.c KL11/DL11 Driver. (no modem support - see unused for this ) lp.c This driver will support both standard DEC LP05/LP11 and CDC lineprinters. It features block buffering and settable parameters (stty calls). High speed (>200LPM) line printers are handled better since buffers are used to queue chars for output. No longer is system cpu bound when printing !!! msc.c Driver for Microcomputer Systems controller with Ampex DM9100 drives. Optimises seeking and rotation and does over- lapped seeks for multiple drives. A la RK05 driver from Childrens Museum. rk.c Modified Childrens Museum (Boston) RK05 driver. MANY bugs fixed and has an improved scheme for optimizing layout. Will also support pseudo rk05's such as PERTEC which don't have overlapped seeks. Layout scheme places logical block one in center of the disk, ie inodes are at disk centre thus reduc- ing seeking time. tm.c TU10 driver which supports all features of our TU16 driver and more. Stty calls can be used for tape positioning etc. unused Directory containing other things we dont use. Have a look. Good Luck and Happy Hunting Chris Maltby