Acorn BBC Master 65C102, User Manual

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This buffer uses RAM in the I/O processor between &4000 and &8000
and should not be used where your own application makes use of this
area of I/O memory. Since the area of memory used by the printer
buffer utility is the same as that available to the user when a co-
processor is not in use; this utility may only be used in
conjunction with a co-processor.
To make use of the printer buffer utility, you should enter:
*BUFFER
It is important to realise that, whilst you are able to continue
using a word processor, or other language resident in the co-
processor, it is not possible to make use of the main RAM in the I/O
processor whilst the printer buffer is in use. This will preclude
the use of a number of other utilities such as AFORM and the Q
parameter available with the sideways RAM utilities. Also, you
should realise that a 20 Kbyte text file can take as much as 15
minutes to print on a slower printer. The microcomputer should be
neither reset or switched off whilst the printer is still printing.
For further information on the use of printers, please refer to the
WELCOME GUIDE that accompanied the microcomputer.
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