CP/M Z80 Assembly Source Code Files
-----------------------------------

These are CP/M programs I've collected over the years. Some I wrote decades
ago and some are new. I hope they are useful. The assembly source code files
are public domain. The assembler I use expects a file extension of '.a' for z80
source code. You'll likely need to rename the files to '.z80' or some such
for whatever assembler you use.

a48.a     This is a primitive 8048 assembler I wrote to do a quicky 8048
          project many years ago. It met my needs at the time, but it
          isn't very powerful: no macros, limited expression syntax, no
          precedence of operators. But it works.

asm48.z80 I don't recall where I got this 8048 assembler, but it apparently
          is public domain. It's more useful than my toy assembler.

acp.a     Advanced Console Processor (acp) is a replacement for CCP. Has
          some nice features. This version is written for a Radio Shack
          Model 4 computer running Montezuma Micro CP/M. Shouldn't be
          difficult to adapt to other versions of CP/M.

args.a    This is a command line parser that produces an argc and argv[] for
          assembly language programs. It will handle up to 32 command line
          arguments.

bdosfunc.inc  An include file that has equ's for BDOS functions.

cls.a     A clear screen program for YAZE (Yet Another Z80 Emulator).

convertcase.c  A Unix C program to convert Z80 assembly source files to lower
          case. Comments and literals in the asm source will not be
          converted.

copy.a    While PIP is a very powerful utility, it's user interface is not
          the best it could be. COPY is a DOS like file copy utility that
          allows wild cards in file names. For example: 'copy *.z80 b:"
          will copy all files on the current drive with a .z80 extension
          to the B: drive (B: cannot be the current drive). 'copy b:*.asm'
          will copy all '.asm' files from drive B: to the current drive.
          You can even do 'copy b:*.* c:' to copy all files from the B:
          drive to the C: drive.

cpmxfer.c This is a utility to transfer files between a PC running Linux
          and a real Z80 CP/M computer. See 'transfer.a' below.

disks.a   Another YAZE utility. 'Disks' will display usage information about
          all CP/M disks in a YAZE system.

grep.a    Z80 assembly version of grep for CP/M.

grepsub.a Include file for grep.

grep.doc  Documentation for grep.

gwiz.a    A global 'whereis' program for YAZE CP/M. Finds files on all disks.
          Example: 'gwiz *.asm' will find .asm files on all disks.

lines.a   Counts lines in a text file.

mon.a     A Z80 monitor program. One of the first CP/M programs I wrote. Still
          useful. You will need to modify the load address depending on the
          size of your TPA.

timetest.a  A timer program used to measure the speed of Z80 emulators. On a
          real 4MHz Z80 computer, it will print out a dot and 100 seconds
          later prints another dot. On my 800MHz Pentium 3 Linux computer,
          the program runs in less than 2 seconds, indicating that YAZE on
          my computer is equivlant to about a 116MHz Z80. Since timetest
          uses only a few instructions, it's not really a good indicator of
          emulator speed, but it does give you a ballpark measurement.

transfer.a  The Z80 CP/M complement to cpmxfer.c. Used to transfer files
          between real CP/M computers and Linux or DOS computers.

undoc.a   A test of undocumented Z80 opcodes.