In computer science, group coded recording or group code recording (GCR) refers to several distinct but related encoding methods for representing data...
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introduction of 6250 bpi tapes which used the more efficient group-coded recording. Manchester code was used in early Ethernet physical layer standards and is...
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of G {\displaystyle G} . Group coded recording (GCR) Watkinson, John (1990). "3.4. Group codes". Coding for Digital Recording. Stoneham, MA, USA: Focal...
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tracks per side. Data is encoded using Commodore's proprietary group coded recording scheme. Soft sectoring is used for track alignment. Like most other...
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extra header byte is what causes this write incompatibility. The Group Coded Recording (GCR) scheme of binary encoding is used to store data on the magnetic...
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Error detection and correction (redirect from Error-detecting code)
magnetic tape data storage in 1951. The optimal rectangular code used in group coded recording tapes not only detects but also corrects single-bit errors...
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This is a list of algebraic coding theory topics....
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Non-return-to-zero (redirect from Inhibit code)
rate. Synchronized NRZI (SNRZI) and group-coded recording (GCR) are modified forms of NRZI. In SNRZI-M each 8-bit group is extended to 9 bits by a 1 in order...
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the Commodore 1540 (meant for the VIC-20). The disk drive uses group coded recording (GCR) and contains a MOS Technology 6502 microprocessor, doubling...
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Various recording methods have been employed during its lifetime as tape speed and data density increased, including PE (phase encoding), GCR (group-coded recording)...
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Nibble (category Articles with example C code)
nybble was used for a group of bits greater than 4. On the Apple II, much of the disk drive control and group-coded recording was implemented in software...
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stamped with the Apple logo. Steve Wozniak developed a recording scheme known as Group Coded Recording which allowed 140k of storage, well above the standard...
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improved line code, such as modified frequency modulation (MFM), modified modified frequency modulation (M²FM), FM/MFM or group coded recording (GCR). SD...
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Retrieved 2012-01-31. "Hard-disk-drive technology flat heads for linear tape recording". Archived from the original on February 16, 2008. Retrieved 2012-01-31...
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gray ink in color printing Group coded recording, a technique for encoding digital data on magnetic tape or disk GCR, ICAO code for Tianjin Airlines, China...
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rotational speed, was approximately constant. This, combined with group-coded recording (GCR), allowed standard floppy disks to hold more data than others...
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Manchester encoding (DM), modified frequency modulation (MFM), M2FM and group coded recording (GCR). The 5¼-inch format displaced the 8-inch one for most uses...
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portal Apple IIGS (limited edition case molded with Woz's signature) Group coded recording (encoding methods for representing data) Hackers: Heroes of the...
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Run-length limited (redirect from Runlength-limited code)
improved to 4/5. This is the original IBM group coded recording variant. Where possible (11 out of 16 codes), the bit pattern abcd is encoded by prefixing...
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compatibility with Apple's variable-speed zoned CAV scheme and group coded recording encoding format, so it could continue to read Macintosh MFS, HFS...
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system makes each block its own cluster.: 86 The disk drive uses group coded recording and contains an MOS Technology 6510T processor as a disk controller...
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Collection GCJ—GNU Compiler for Java GCP—Google Cloud Platform GCR—Group Coded Recording GDB—GNU Debugger GDI—Graphics Device Interface GFDL—GNU Free Documentation...
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Shugart SA-800s. All of the models in the 8060 series use Commodore group coded recording (GCR) for disk reading and writing; the later 8061 and 8062 models...
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previous Commodore drives. Earlier Commodore drives used a custom group coded recording format that stored 170 kB per side of a disk. This made it fairly...
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4B5B (category Line codes)
4-to-5-bit codes have been used for magnetic recording and are known as group coded recording (GCR), but those are (0,2) run-length limited codes, with at...
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drives used with the later two machines. The standard Commodore Group Coded Recording (GCR) scheme used in 1541 and compatibles employed four different...
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computer revolution. After Peddle's death, Mensch wrote in memoriam. Group coded recording Metz, Cade (December 24, 2019). "Chuck Peddle Dies at 82; His $25...
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Durango "Poppy"; MS-DOS was selected as the entry operating system. Group coded recording The product flyer for the Durango 800 series documents a formatted...
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the low-level data encoding format used by the disk system, being Group Coded Recording (GCR - Apple, Commodore), Frequency Modulation (FM - Atari), or...
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storage vendor. Its assets were sold in 2000 to Bell Microproducts. Group Coded Recording (GCR) "Micropolis - MetaFloppy. Beyond the floppy" (PDF). Canoga...
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