System information

As an added convenience, the default buffer area at location BOOT+0080H is initialized to the

command line tail typed by the operator following the program name. The first position contains

the number of characters, with the characters themselves following the character count. Given the

above command line, the area beginning at BOOT+0080H is initialized as follows:

BOOT+0080H:

+00 +01 +02 +03 +04 +05 +06 +07 +08 +09 + A + B + C + D + E

E '' 'B' ':' 'X' '.' 'Z' 'O' 'T' '' 'Y' '.' 'Z' 'A' 'P'

where the characters are translated to upper-case ASCII with uninitialized memory following the

last valid character. Again, it is the responsibility of the programmer to extract the information

from this buffer before any file operations are performed, unless the default DMA address is

explicitly changed.

Individual functions are described in detail in the pages that follow.

FUNCTION 0: SYSTEM RESET

Entry Parameters:

The System Reset function returns control to the CP/M operating system at the CCP level. The

CCP reinitializes the disk subsystem by selecting and logging-in disk drive A. This function has

exactly the same effect as a jump to location BOOT.

5.2 Call Conventions CP/M Operating System Manual

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