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Implemented (but have not yet tested) ASHC opcode for PDP-10

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Jeff 2017-03-05 14:14:14 -08:00 • committed by Jeff Parsons
commit 286a122b05
5 changed files with 626 additions and 374 deletions
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9
modules/pdp10/lib/defines.js
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@ -109,17 +109,18 @@ var PDP10 = {
* values as unsigned quantities, these are the unsigned equivalents.
*/
WORD_INVALID: -1,
HALF_MASK: Math.pow(2, 18) - 1, // 262,143 (000000 777777): unsigned half-word mask
HALF_SHIFT: Math.pow(2, 18), // 262,144 (000001 000000): unsigned half-word shift
INT_MASK: Math.pow(2, 35) - 1, // 34,359,738,367 (377777 777777): signed word (magnitude) mask
INT_LIMIT: Math.pow(2, 35), // -34,359,738,368 (400000 000000): signed word (magnitude) limit
INT_LIMIT: Math.pow(2, 35), // 34,359,738,368 (400000 000000): signed word (magnitude) limit
WORD_MASK: Math.pow(2, 36) - 1, // 68,719,476,735 (777777 777777): unsigned word mask
WORD_LIMIT: Math.pow(2, 36), // 68,719,476,735 (1 000000 000000): unsigned word limit
HALF_MASK: Math.pow(2, 18) - 1, // unsigned half-word mask
HALF_SHIFT: Math.pow(2, 18), // unsigned half-word shift
WORD_LIMIT: Math.pow(2, 36), // 68,719,476,736 (1 000000 000000): unsigned word limit
MAX_POS18: Math.pow(2, 17) - 1, // 131,071 (377777)
MIN_NEG18: Math.pow(2, 17), // -131,072 (400000)
MAX_POS36: Math.pow(2, 35) - 1, // 34,359,738,367 (377777 777777)
MIN_NEG36: Math.pow(2, 35), // -34,359,738,368 (400000 000000)
TWO_POW36: Math.pow(2, 36), // the two's complement of a 36-bit value is (value? TWO_POW36 - value : 0)
TWO_POW32: Math.pow(2, 32),