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Well, apparently the PDP-10 MUL instruction really DOES store the high-order word first, and it only stores the low-order word if the destination is an accumulator (weird)

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Jeff 2017-03-07 14:09:24 -08:00 • committed by Jeff Parsons
commit 65eb821710
6 changed files with 118 additions and 46 deletions
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versions/pdpjs/1.34.2/pdp10-dbg.js
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@ -104,7 +104,7 @@ function de(a,b){var c=this.g(this.f),d=this.g(b);this.i(b,ee(a,d,c)+(c-(c&A)))}
function je(a,b){var c=this.f*E,d=this.g(b);this.i(b,ee(a,d,c)+c)}function ke(a,b){b=(this.g(b)&A)*E;var c=this.g(this.f);this.i(this.f,ee(a,c,b)+b)}function le(a,b){var c=this.g(this.f),d=(c&A)*E,c=ee(a,c,d)+d;this.i(this.f,c);b&&this.i(b,c)}function me(a,b){var c=this.g(this.f)&A,d=this.g(b);this.i(b,ne(a,d,c)+c)}function oe(a,b){var c=this.g(b);this.i(b,ne(a,c,this.f)+this.f)}function pe(a,b){b=this.g(b)&A;var c=this.g(this.f);this.i(this.f,ne(a,c,b)+b)}
function qe(a,b){var c=this.g(this.f),d=c;if(a&=384)switch(d&=A,a){case 256:d+=A*E;break;case 384:d+=c>Vb?A*E:0}c=d;this.i(this.f,c);b&&this.i(b,c)}function re(a,b){var c=this.g(this.f)/E|0,d=this.g(b);this.i(b,ne(a,d,c)+c)}function se(a,b){var c=this.g(b);this.i(b,ne(a,c,0))}function te(a,b){b=this.g(b)/E|0;var c=this.g(this.f);this.i(this.f,ne(a,c,b)+b)}function ue(a,b){var c=this.g(this.f),d=c/E|0,c=ne(a,c,d)+d;this.i(this.f,c);b&&this.i(b,c)}function S(a){ve[a&7].call(this,a,a>>3&127)}
function we(){}function Q(a){this.j("undefined opcode: "+wa(a));wd(this,-1);this.V()}function xe(a){a>I&&(a!=Wb?a=Xb-a:this.u|=163840);return a}function ye(a,b){var c=(a+b)%H;ze.call(this,a,b,c);return c}function U(a,b){return((a/J|0)&(b/J|0))*J+((a&b)>>>0)}function Ae(a,b){return((a/J|0)^(b/J|0))*J+((a^b)>>>0)}function Be(a,b){return(~((a/J|0)^(b/J|0))&15)*J+(~(a^b)>>>0)}function V(a,b){return(a/J|0|b/J|0)*J+((a|b)>>>0)}
function Ce(a,b){var c=b;b=!1;var d;a>I&&(a=H-a,b=!b);c>I&&(c=H-c,b=!b);if(a<E&&c<E)d=a*c,a=0;else{d=a%E;var e=Math.trunc(a/E);a=c%E;var c=Math.trunc(c/E),f=d*a,g=e*a+Math.trunc(f/E);a=Math.trunc(g/E);g=g%E+d*c;d=g*E+f%E;a+=Math.trunc(g/E)+e*c}b&&(d?(a=G-a,d=H-d):a&&(a=H-a));b=a-a%F;a=2*a%H+Math.trunc(d/F);d=b+d%F;e=a-a%F;b!=e&&(a=b+(a-e),this.u|=131072);this.Ma=a;return d}function De(a){a?a==Wb?this.u|=163840:a=Xb-a:this.u|=98304;return a}
function Ce(a,b){var c=b;b=!1;var d;a>I&&(a=H-a,b=!b);c>I&&(c=H-c,b=!b);if(a<E&&c<E)d=a*c,a=0;else{d=a%E;var e=Math.trunc(a/E);a=c%E;var c=Math.trunc(c/E),f=d*a,g=e*a+Math.trunc(f/E);a=Math.trunc(g/E);g=g%E+d*c;d=g*E+f%E;a+=Math.trunc(g/E)+e*c}b&&(d?(a=G-a,d=H-d):a&&(a=H-a));b=a-a%F;a=2*a%H+Math.trunc(d/F);d=b+d%F;e=a-a%F;b!=e&&(a=b+(a-e),this.u|=131072);this.Ma=d;return a}function De(a){a?a==Wb?this.u|=163840:a=Xb-a:this.u|=98304;return a}
function Ee(a,b){var c=a-b;0>c&&(c+=H);ze.call(this,c,b,a);return c}function ze(a,b,c){a=Math.trunc(a/Yb);b=Math.trunc(b/Yb);c=Math.trunc(c/Yb);var d=a^(a^b)&(b^c);this.u=this.u|(d&2?65536:0)|(d&1?32768:0)|((a^c)&(b^c)&2?131072:0)}function ne(a,b,c){switch(a&384){case 0:b-=b&A;break;case 128:b=0;break;case 256:b=A*E;break;case 384:b=c>Vb?A*E:0}return b}function ee(a,b,c){switch(a&384){case 0:b&=A;break;case 128:b=0;break;case 256:b=A;break;case 384:b=c>I?A:0}return b}
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