[Date Prev][Date Next][Subject Prev][Subject Next][Date Index][Subject Index]

Re: Handling of 00h bytes by XyWrite



Wally,
The Bitstream Speedo system was incorrectly implemented in the Xy4 menus which dated back to Signature. In the Service Pack, code page switching happens outside of the Xy4 engine (in virtual screen display and printer output). Xy4 is strictly a one-CP system. So the "0FEh triggered stuff" remains the same irrespective of additional CPs. Xy4 engine "thinks" it is still in CP437. (There is some internal support/confusion for CP437/CP850 in the engine for screen/printing as a remnant of Signature). I think the Bitstream encoding addition can be safely ignored (it is of no use, and never was).

Best regards,

Kari Eveli
LEXITEC Book Publishing (Finland)
lexitec@xxxxxxxxxx

*** Lexitec Online ***
Lexitec in English: https://www.lexitec.fi/english.html
Lexitec English and Finnish dictionaries: https://sk.lexitec.fi/en/
Home page in Finnish: https://www.lexitec.fi/


wbass@xxxxxxxxxxxx wrote:
A guess a second question, which is only a matter of curiosity, would be
  "do the extra encodings" offered by 0FEh triggered escape sequences
actually get used, in practice. I get the feeling that that mechanism
(kludgy as it was) isn't really used, but instead, the problem has been
solved more by allowing users to switch (256 byte) "Code Pages" very
easily. Is that impression correct, and if not, can anyone explain how
the 0FEh triggered stuff "integrates" with the "switch Code Pages at
will" capability.