1.8
Downloading files to the S4 Plus
It is possible to download DOS files to the S4 Plus printers.
– for editing - load the files MASTER, IMAJE.INI, S4P.BDG, *.GCG
– for languages - load the files *.RC, *.IDX
The downloaded files are copied to the root of drive D: (backed-up RAM).
The transfer format is as follows:
CALCULATOR
PRINTER
Length
xxh xxh
Identification
50h
Name of file (DOS)
- - -
First block
00h
Data
Control byte
xxh
NACK
ACK
15h
06h
or
Length
xxh xxh
Identification
50h
Control byte
xxh
Blocks 1 to (N-1)
01h
Data
File data (x bytes)
- - -
NACK
ACK
15h
06h
or
Protocol
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A13862 Version E