Processor Technology Sol-PC, Manual

Page: 203 / 284

III. TAPE COMMANDS
Tape commands are used to control the tape cassette recorders. In
these commands, unit selection is optional, with a default select-
ing unit 1. When a unit is specified, however, it must be separated
from the file identification name with a slash (/) and without
spaces in between: e.g., TARGT/2.
Tape Header
At the start of each tape file is header information. This informa-
tion includes the following data:
name: name of file, 5 ASCII characters or less
type: number is specified by user at time file is created
addr: starting address of file
size: number of data bytes in file
XEQ addr: auto-execute address word (See Set Commands -
Section IV)
Error Messages
Cassette error messages are printed in this format:
"ERROR (name) (type) (addr) (size)"
Reasons for an error message are:
1. bad read of file (tape error or CRC ERROR)
2. MODE (or Control-@) key used for escaping while reading
a tape file
3. XEQ command given to a non-executable file.
Tape Commands in Brief
SOLOS has four tape commands. They are:
GET (name (/unit) (addr)) Get a file from tape to memory
SAVE name (/unit) addr1 addr2
(addr3) Save file
XEQ (name (/unit) (addr)) Get, then execute, a file
CAT (/unit) Catalog of tape files