80-Bus News


March-April 1983, Volume 2, Issue 2

Page 15 of 55

default USER area on the final default drive using the hierarchical drive B:, USER 2, and PEN was stored sequence would search failed, then on to the default (or



DFU command). Further, extends through the CP/M USER areas. Suppose I was on on drive A:, USER 0; then the search default (or specified) drive and USER, if the specified) drive, USER 0, if that


start with the

failed then on to the final CCPZ default, USER 0. Only then, if the search failed would any error message be displayed. Note also that the hierarchical search does

not take

Having found PEN, the whole for S80BUS6-2.PEN looking for then PEN says so. So the important thing to note is


does the

command extension, in this instance the 80BUS6-2.PEN. lot resets to the original conditions. So PEN on the original default. If PEN can’t find what it’s that CCPZ only hierarchical bit when searching for the command file, what follows is

place on the

not the business of CCPZ, it’s up to the command file to decide where it gets the command extension from.

Another nice little tweek is the prompt itself, when you change USER



new area number is displayed in the prompt. So that you can see at a

glance that:

Bi2> you are

mind, the ERA command, when you erase a file(s) the ERA command displays what

on default drive B: USER area 12. Nice isn’t it. Yet another comes to


has erased. (Even better if it stopped after displaying the list and asked you if you meant it, but it doesn’t.) Well you at least know what you erased, and if you

find what?

As to the commands, well all the original CP/M

one you didn’t mean, then a little utility I have called UNERA does, guess

commands are there of

course, but some work differently:

Command: Function: Forms:


Command: Function: Forms: Notes:

Command: Function: Forms: Notes:

Command: Function: Forms:


DIR To display a listing of the names of the files on the disk.

DIR <afn> , Displays $DIR files DIR <afm> S Displays $SYS files DIR <afn> A Displays both $DIR and $SYS files

If the directory is scanned for a name and no such name exists on the disk the message ‘No Files’ will be displayed. However, if the search was for $DIR files and the file existed as a $SYS file or vice versa, then no message will be displayed indicating that the file does exist but the file attribute is not as specified.


To erase the specified R/W file from the directory.

ERA <afn> Erase both $DIR and $SYS files from disk. The name(s) of the file(s) erased is displayed as a cross check.


To print the specified file to the CP/M LST: device.

LIST <ufn> Print the file (no paging).

The file will be printed regardless of the $DIR or $SYS attribute.


To print the specified file to the CP/M CON: device.

TYPE <ufm Type the file with the paging default.

TYPE <ufn> P Type the file with the paging default negated. Any character will continue typing at the end of a page. “C will terminate typing, “P and “S will work as usual.

This is an OCR’d version of the scanned page and likely contains recognition errors.

Page 15 of 55