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Perform the documented encoding of SIXBIT character data for MACRO-10

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Jeff 2017-03-12 11:56:15 -07:00 • committed by Jeff Parsons
commit 9ac0ffe679
11 changed files with 20 additions and 12 deletions
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modules/pcx86/lib/x86func.js
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@ -678,7 +678,7 @@ X86.fnDIVw = function(dst, src)
* Detect too-small divisor (quotient overflow)
*
* WARNING: We CANNOT simply do "src = (this.regEDX << 16) | this.regEAX", because if bit 15 of DX
* is set, JavaScript will create a negative 32-bit number. So we instead use non-bit-wise operators
* is set, JavaScript will create a negative 32-bit number. So we instead use non-bitwise operators
* to force JavaScript to create a floating-point value that won't suffer from 32-bit-math side-effects.
*/
src = (this.regEDX & 0xffff) * 0x10000 + (this.regEAX & 0xffff);