laser-lovers@ucbvax.UUCP (11/14/85)
The program below may be downloaded to a LaserWriter to correct three
bugs in the LaserWriter's serial I/O driver:
- occasional failure to send a needed XON
- erroneously reading past end-of-file (control-D)
- dropped characters during large volumes of output
The first two of these bugs are documented in the Apple LaserWriter
appendix of the PostScript Language Reference Manual; the third has
been discussed previously on laser-lovers.
To install this patch, first edit it if necessary to change the system
administrator password from its default value of zero; then simply send
it to the printer. Once installed, the patch survives until the
LaserWriter is next powered off.
This patch applies only to LaserWriters and not to other PostScript
printers. Sending it to a non-LaserWriter or sending it more than once
will have no effect. TranScript site administrators may wish to
download this patch automatically as part of the hourly script.
The program begins at the "%!" and ends immediately after the last line
of hex digits.
Ed Taft
Adobe Systems, Inc.
Notice: PostScript and TranScript are trademarks of Adobe Systems, Inc.
%!
0000000000 % the exitserver password
version (23.0) ne
{(Patch not installed -- wrong printer type or version) = stop} if
statusdict /Patch1Installed known
{(Patch already installed -- not installed again) = stop} if
serverdict begin exitserver
statusdict /Patch1Installed true put
currentfile eexec
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a80212a3bd61248f8859cb1252a7320775a6d4ec524bcbf5771aceb8f61ea2fb
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d197ff27f22a617c85bce7ed59ef1a6062d01d0fdee5b4e7d298997638497cc6
a2d56a0eacc195795949f515bbbda9cfe899e43ad257da93f3144797b00dbb81
8a41b4fa56a0295c25e693864084cbb5d63834f1d94a46816d4a2cbe005cc57c
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8d84ac8271ef44def53d8207ce9653d598fe8046120f223bfca0b5c74a54f70b
eb5a0bc09d8e79742048b875864a3b489eb91c09b701f506e994271a6640f78a
d131f1eef3c96e546f7273fb3533799a6470be2ed3b8f2e211bf9f9f209edbd2
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4118cc69e01eab0f4ef1f364c815f306d5f43420cf7c9316e5ee69c7183dd8d2
805a9dfe6abb33c46d3a212d5c6b6fd68418eef971