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- 16th January 1993
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- Support Group Application Note
- Number: 005
- Issue: 1
- Author:
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-
- Use of *FX 3
-
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- Applicable Hardware: BBC B
- BBC B+
- BBC Master 128
-
- Related Application Notes:
-
-
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- Copyright (C) Acorn Computers Limited 1992
-
- Every effort has been made to ensure that the information in this leaflet is
- true and correct at the time of printing. However, the products described in
- this leaflet are subject to continuous development and improvements and
- Acorn Computers Limited reserves the right to change its specifications at
- any time. Acorn Computers Limited cannot accept liability for any loss or
- damage arising from the use of any information or particulars in this
- leaflet. ACORN, ECONET and ARCHIMEDES are trademarks of Acorn Computers
- Limited.
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- Support Group
- Acorn Computers Limited
- Acorn House
- Vision Park
- Histon
- Cambridge CB4 4AE
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-
- USE OF *FX 3
-
- Output characters destination
-
- As a result of omissions in the BBC User Guide, use of the *FX 3
- command is difficult, particularly when one destination, which is not the
- screen, is required.
-
- The error is the User Guide is as follows:
-
- page 422: The chart of written character destinations shows
- four ticks in the Printer [Bit 2] column. There should not be ticks for *FX
- 3,2 and 3,3.
-
- There is an undocumented bit of this word (bit 3) which allows other bits to
- be overridden; this is summarised in Table 1.
-
- Table 1 - the effect of *FX3.n
-
- Note that the appropriate printer must have been selected with *FX5, and
- that if a serial printer is selected with FX5 and RS423 is selected from the
- above chart (with FX3) then the output from the RS423 port is undefined.
-
-