Digital-Research-Source-Code/CPM OPERATING SYSTEMS/CPM.Z80.DE/PERSONAL/PCPM/PCPM-80 1.0 SOURCE/README.MARKDOWN

Source files of PCP/M-80 1.0.

/READ.ME

The following list of corrections should be made to the Personal CP/M 8-bit version 1.0 documentation.

Programmer's Guide

    page 2-10
    BDOS function 2
            text says 'CONSOLE INPUT'
            should be 'CONSOLE OUTPUT'

    page 2-45
    BDOS function 33
            'Entry Parameters' add after Register C line:
            'Register DE:   FCB Address'

    page 2-49
    BDOS function 35
            replace information about values returned in registers with:
            'Random record field of FCB set'

System Guide

    Section 2
            References to the BDOS size being 1100h bytes are incorrect.
            The BDOS code segment is 1000h bytes, and the BDOS data
            segment is 00BFh bytes.  With the standard distibution,
            BDOSH.REL and BDOSL.REL will link these in a separate area
            from the BDOS code segment.  OEMs that purchase the source
            can set an assembly-time switch that will make the data areas
            part of the code segment so that it will all be linked as one
            segment of 1100h bytes if the BDOS will execute in RAM.

    page 4-15
    BIOS function WRITE
            Entry Parameters:  Register C = 0:  normal sector write
                                            1:  write to directory sector
                                            2:  write to the first sector
                                                of a new data block



/README.TOO

Please note: line 2528 in BDOS.MAC is corrupted. It should read

    jp      z,COPY$DIRLOC   ;stop at end of dir

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This zip file contains the original source for Personal CP/M 1.0. If anybody figures out anything about this code, please drop an email message to me at :

gaby@gaby.de

and I'll pass it on.

tnx