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The command byte itself has three parts:
Control Bit
Offset Count
Replacement Count
Control Bit. Determines whether the replacement data
is compressed, and also the bit boundaries of the
command byte’s other two fields.
Offset Count. The left offset (number of bytes) the
replacement data is offset from the current byte position
in the seed row.
Replacement Count. The number of consecutive bytes
to be replaced. One more byte than the replacement
count is replaced (for example, 6 bytes are replaced by a
replacement count of 5).
Like compression method 3, the “current” byte follows the
last replacement byte; at the beginning of a row, the current
byte immediately follows left raster margin. An offset of 0
indicates the current byte; an offset of 1 indicates the byte
following the current byte.
The size of the offset count and replacement count fields
depends on the value of the control bit.
CONTROL BIT = 0
7
6 3
2 0
Control Bit = 0
Offset Count
Replacement Count
If the control bit is 0, the replacement data is
uncompressed. If the control bit is 0, bits 0-2 indicate the
replacement count and bits 3-6 indicate the offset count.
If the offset count is 15, an additional offset count byte
follows and is added to the total offset count. If the offset
count byte is 255, another offset count byte follows. The last
offset count byte is indicated by a value less than 255.
If the replacement count is 7, an additional replacement
count byte follows and is added to the total replacement
Printer-Specific Differences 2-95
Содержание PCL 5
Страница 8: ...Contents 4 ...
Страница 174: ...5 8 Memory Usage ...
Страница 198: ...A 24 Printer Commands ...
Страница 201: ...8U Roman 8 R8 7J DeskTop DT Internal Symbol Set Charts B 3 ...
Страница 202: ...0N ISO 8859 1 Latin 1 E1 19U Windows 3 1 Latin 1 W1 B 4 Internal Symbol Set Charts ...
Страница 203: ...12U PC 850 Multilingual PM 10U PC 8 Code Page 437 PC Internal Symbol Set Charts B 5 ...
Страница 204: ...12J MC Text MC 10J PS Text TS B 6 Internal Symbol Set Charts ...
Страница 205: ...11U PC 8 Danish Norwegian PD 13J Ventura International VI Internal Symbol Set Charts B 7 ...
Страница 206: ...1U Legal LG 14J Ventura US VU B 8 Internal Symbol Set Charts ...
Страница 207: ...6J Microsoft Publishing PG 9U Windows 3 0 Latin 1 WO Internal Symbol Set Charts B 9 ...
Страница 208: ...17U PC 852 Latin 2 PE 9T PC Turkish PT B 10 Internal Symbol Set Charts ...
Страница 209: ...9E Windows 3 1 Latin 2 WE 2N ISO 8859 2 Latin 2 E2 Internal Symbol Set Charts B 11 ...
Страница 210: ...5N ISO 8859 9 Latin 5 E5 5T Windows 3 1 Latin WT B 12 Internal Symbol Set Charts ...
Страница 211: ...9J PC 1004 Code Page 1004 PU 26U PC 775 Code Page 775 PV Internal Symbol Set Charts B 13 ...
Страница 212: ...19L Windows Baltic WL 6N ISO 8859 10 Latin 6 E6 B 14 Internal Symbol Set Charts ...
Страница 213: ...6M Ventura Math VM 8M Math 8 M8 Internal Symbol Set Charts B 15 ...
Страница 214: ...5M PS Math MS 15U Pi Font PI B 16 Internal Symbol Set Charts ...
Страница 215: ...19M Symbol Font AS 579L Wingdings Font L Internal Symbol Set Charts B 17 ...
Страница 216: ...9L Ventura ITC Zapf Dingbats DV 10L PS ITC Zapf Dingbats DS B 18 Internal Symbol Set Charts ...
Страница 217: ...11L ITC Zapf Dingbats series 100 D1 12L ITC Zapf Dingbats series 200 D2 Internal Symbol Set Charts B 19 ...
Страница 218: ...13L ITC Zapf Dingbats series 300 D3 B 20 Internal Symbol Set Charts ...
Страница 221: ...Table B 2 Roman 8 Character Conversion Internal Symbol Set Charts B 23 ...
Страница 222: ...Table B 2 Roman 8 Character Conversion continued B 24 Internal Symbol Set Charts ...
Страница 223: ...Table B 2 Roman 8 Character Conversion continued Internal Symbol Set Charts B 25 ...
Страница 224: ...Table B 2 Roman 8 Character Conversion continued B 26 Internal Symbol Set Charts ...
Страница 225: ...Table B 2 Roman 8 Character Conversion continued Internal Symbol Set Charts B 27 ...
Страница 226: ...Table B 2 Roman 8 Character Conversion continued B 28 Internal Symbol Set Charts ...
Страница 227: ...Table B 2 Roman 8 Character Conversion continued Internal Symbol Set Charts B 29 ...
Страница 228: ...B 30 Internal Symbol Set Charts ...
Страница 248: ...C 20 Symbol Set and Typeface Codes ...