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6287 ULTRA Users ManualPage 11-2
This includes the trigger (35h), the count byte (03h), and the three bytes for
Esc+X (1Bh, 2Bh, 58h).
The user can generate any possible eight-bit command or data byte that is to
be sent to the printer. There is a one-to-one correspondence between what is
received by the ULTRA and what is sent to the printer.
IBM 35h is activated when Option #53 is set to Yes. If Option #53 is set
to No, then the trigger, the count byte and all of the otherwise transparent
characters will be printed normally, as indicated by the active translate table
(see Section 7 Translate Tables). Refer to Section 14 SCS Data
Streams for more information on IBM 35h transparency.
Metacode Transparency Mode
Metacode is a variation of 35h transparency, with the exception that this
transparency mode is handled directly by the printer, rather than by the
ULTRA. Metacode is used by some Xerox printers (the Xerox 4235, for
example).
The data seen by the ULTRA and the printer are identical when this type of
data is detected. If Option #58 is set to Yes, the ULTRA will send the 35h
and the count byte directly to the printer without any translation, rather than
removing them from the data stream. It also sends the remaining bytes in
the transparent packet without any translation.
For example, the character string 35h, 02h, 41h, 41h would be output to the
printer in 35h transparency as two characters: 4141. In Metacode
transparency, all four characters would be sent to the printer: 35024141.
If Option #58 is set to No, then the trigger, the count byte and all of the
otherwise transparent characters will be printed normally, as indicated by
the active translate table (see Section 7 Translate Tables).
Xerox 36 Hex Transparency Mode
This form of transparency is identical to 35h transparency, except that the
trigger character is 36h. Xerox applications typically use 36h instead of 35h
to send data directly to the printer.
If Option #5 is set to Yes, the ULTRA detects the trigger, picks up the
count byte and starts passing through the remaining data. If Option #5 is
set to No, then the trigger, the count byte and all of the otherwise
transparent data will be printed normally, as indicated by the active
translate table (see Section 7 Translate Tables).