2014-04-26 10:52:28 -04:00
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BLT
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2014-04-26 11:54:15 -04:00
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/BLT/ , /bl@t/ , /belt/ , n.,vt. Synonym for blit. This is the original form
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of blit and the ancestor of bitblt. It referred to any large bit-field copy
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or move operation (one resource-intensive memory-shuffling operation done on
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pre-paged versions of ITS, WAITS, and TOPS-10 was sardonically referred to
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as The Big BLT ). The jargon usage has outlasted the PDP-10 BLock Transfer
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instruction from which BLT derives; nowadays, the assembler mnemonic BLT
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almost always means Branch if Less Than zero.
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