Added code to help identify instances where multiplication constants should be checked against other sources for accuracy

This commit is contained in:
Jeff 2017-04-01 11:08:44 -07:00 committed by Jeff Parsons
commit 46ed7c77e8
4 changed files with 386 additions and 3 deletions

View file

@ -20,8 +20,9 @@ for use with the [PDP-10 Test Machine with Debugger](/devices/pdp10/machine/ka10
This diagnostic "TESTS THE MULTIPLY INSTRUCTION AND THE MULTIPLY ALGORITHM."
Resources for this diagnostic include:
Information regarding this diagnostic includes:
- [Issues](#issues)
- [Instructions](#dakaktxt)
- [History](#dakakhst)
- [Source Code](#dakakmac)
@ -57,6 +58,37 @@ JavaScript parameters; e.g.:
embedPDP10(...,'{commands:"a 'dakakt.mac;../param.klm;../fixed.klm;dakakm.mac;../uuoerr.klm;../stor.klm'"}');
Issues
------
As noted in [cpuops.js](/modules/pdp10/lib/cpuops.js), in the *doMUL()* function:
> The DAKAK diagnostic contains the following code:
036174: 200240 043643 MOVE 5,43643 ; [43643] = 400000000000
036175: 200300 043603 MOVE 6,43603 ; [43603] = 777777777777
036176: 200140 043604 MOVE 3,43604 ; [43604] = 000000000001
036177: 224240 000003 MUL 5,3 ; Multiply 400000000000 by 000000000001
036200: 312240 043604 CAME 5,43604 ; high order result in AC should be: 000000000001
036201: 003240 033721 UUO 5,33721 ;
036202: 312300 043602 CAME 6,43602 ; low order result in AC+1 should be: 000000000000
> The "natural" result is:
05=777777777777 06=400000000000
> And SIMH seems to agree. So why does the DEC diagnostic expect:
05=000000000001 06=000000000000
> The answer can be found in the [DECSYSTEM-10 and DECSYSTEM-20 Processor Reference Manual (June 1982)](http://archive.pcjs.org/pubs/dec/pdp10/kl10/AA-H391A-TK_DECsystem-10_DECSYSTEM-20_Processor_Reference_Jun1982.pdf),
in the description of the MUL instruction:
CAUTION: In the KA10, an AC operand of 2^35 is treated as though it were +2^35, producing the
incorrect sign in the product.
> This behavior is now simulated below for MODEL_KA10, at least to the extent that the diagnostic is happy.
---
DAKAK.TXT

View file

@ -21,8 +21,9 @@ for use with the [PDP-10 Test Machine with Debugger](/devices/pdp10/machine/ka10
This diagnostic "TESTS THE MULTIPY, INTERGER MULIPLY, DIVIDE AND INTERGER DIVIDE INSTRUCTIONS." Hopefully the tests work better
than their spell-checking.
Resources for this diagnostic include:
Information regarding this diagnostic includes:
- [Issues](#issues)
- [Instructions](#dakaltxt)
- [History](#dakalhst)
- [Source Code](#dakalmac)
@ -41,6 +42,345 @@ This command:
will automatically read the [DAKAL.MAC](DAKAL.MAC.txt) source file (a slightly modified copy of [DAKALM.MAC](DAKALM.MAC.txt)),
assemble it, and then load the binary image at the location specified in the file.
Issues
------
The following DAKAL diagnostic test sequence produced correct results but still failed:
00=000000000000 01=000000000000 02=000000000000 03=000000000000
04=000000000000 05=000000000000 06=000000000000 07=000000000000
10=000000000000 11=000000000000 12=000000000001 13=000000000000
14=777777777777 15=525252525252 16=000000000016 17=000000000000
PC=030641 RA=00030626 EA=030626 PS=000000 OV=0 C0=0 C1=0 ND=0 PD=0
030641: 200600 044434 MOVE 14,44434 ;cycles=1
>> tr
00=000000000000 01=000000000000 02=000000000000 03=000000000000
04=000000000000 05=000000000000 06=000000000000 07=000000000000
10=000000000000 11=000000000000 12=000000000001 13=000000000000
14=525252525252 15=525252525252 16=000000000016 17=000000000000
PC=030642 RA=00044434 EA=044434 PS=000000 OV=0 C0=0 C1=0 ND=0 PD=0
030642: 200640 044435 MOVE 15,44435 ;cycles=1
>> tr
00=000000000000 01=000000000000 02=000000000000 03=000000000000
04=000000000000 05=000000000000 06=000000000000 07=000000000000
10=000000000000 11=000000000000 12=000000000001 13=000000000000
14=525252525252 15=000000000000 16=000000000016 17=000000000000
PC=030643 RA=00044435 EA=044435 PS=000000 OV=0 C0=0 C1=0 ND=0 PD=0
030643: 200500 044440 MOVE 12,44440 ;cycles=1
>> tr
00=000000000000 01=000000000000 02=000000000000 03=000000000000
04=000000000000 05=000000000000 06=000000000000 07=000000000000
10=000000000000 11=000000000000 12=000000000002 13=000000000000
14=525252525252 15=000000000000 16=000000000016 17=000000000000
PC=030644 RA=00044440 EA=044440 PS=000000 OV=0 C0=0 C1=0 ND=0 PD=0
030644: 224600 000012 MUL 14,12 ;cycles=1
>> tr
00=000000000000 01=000000000000 02=000000000000 03=000000000000
04=000000000000 05=000000000000 06=000000000000 07=000000000000
10=000000000000 11=000000000000 12=000000000002 13=000000000000
14=777777777776 15=652525252524 16=000000000016 17=000000000000
PC=030645 RA=00000012 EA=000012 PS=000000 OV=0 C0=0 C1=0 ND=0 PD=0
030645: 312600 044441 CAME 14,44441 ;cycles=1
>> tr
00=000000000000 01=000000000000 02=000000000000 03=000000000000
04=000000000000 05=000000000000 06=000000000000 07=000000000000
10=000000000000 11=000000000000 12=000000000002 13=000000000000
14=777777777776 15=652525252524 16=000000000016 17=000000000000
PC=030647 RA=00044441 EA=044441 PS=000000 OV=0 C0=0 C1=0 ND=0 PD=0
030647: 312640 044442 CAME 15,44442 ;cycles=1
The multiplication of 525252525252 * 2 produces 777777777776,652525252524, which is correct for the PDP-10's 72-bit "dual sign"
format. However, the first time I ran this test, it failed -- not because the result was wrong, but because the value calculated
for the expected result was wrong.
The source code for the test produces the expected results by performing 36-bit multiplication in the MACRO-10 Assembler:
775 ;MULTIPLY A FLOATING 1 BY 1010...101010
776 525252 525252 V1=N1
777 652525 252524 V2=N1*XX
but the expected result *my* MACRO-10 Mini-Assembler calculated was different:
>> dw 44442 l1
044442: 252525 252524
My result wasn't really the *wrong value*; it was the correct (albeit truncated) value in the *wrong format*. My expression
parser was performing simple JavaScript multiplication and then truncating the result to 36 bits; MACRO-10 performs a similar
calculation, but it also adjusts the sign of the low 36 bits to match the sign of the high 36 bits -- because that's what the
PDP-10 does, too.
My solution was to move the expression parser's *multiplication* code to its own function, *evalMUL()*, and then change
the PDP-10 Debugger to override *evalMUL()* with its own function that calls the PDP-10 CPU *doMUL()* function, guaranteeing
that all multiplication results are performed with the same 72-bit precision and returned in the same PDP-10 72-bit format
(before being truncated to 36 bits).
Unfortunately, this creates an incestuous relationship between CPU functionality being tested and the code testing it,
because it increases the likelihood that the multiplication tests will succeed even if/when they calculate incorrect results,
at least whenever the expected results are being calculated with the same multiplicands that the test itself uses.
So, as a precaution, I added some *DEBUG* code to the *evalMUL()* function that outputs all the instances where JavaScript
multiplication and PDP-10 multiplication differ, so that I can verify that all my PDP-10 results match those in DEC's
[MACRO-10 Listing](DAKAL.LST.txt), which I'm treating as "the gold standard."
Here's that output:
MUL(525252525252,000000000002) PDP-10: 652525252524 JavaScript: 252525252524 @030641
MUL(525252525252,000000000002) PDP-10: 652525252524 JavaScript: 252525252524 @030641
MUL(525252525252,000000000004) PDP-10: 525252525250 JavaScript: 525252525250 @030654
MUL(525252525252,000000000004) PDP-10: 525252525250 JavaScript: 525252525250 @030654
MUL(525252525252,000000000010) PDP-10: 652525252520 JavaScript: 252525252520 @030667
MUL(525252525252,000000000010) PDP-10: 652525252520 JavaScript: 252525252520 @030667
MUL(525252525252,000000000020) PDP-10: 525252525240 JavaScript: 525252525240 @030702
MUL(525252525252,000000000020) PDP-10: 525252525240 JavaScript: 525252525240 @030702
MUL(525252525252,000000000040) PDP-10: 652525252500 JavaScript: 252525252500 @030715
MUL(525252525252,000000000040) PDP-10: 652525252500 JavaScript: 252525252500 @030715
MUL(525252525252,000000000100) PDP-10: 525252525200 JavaScript: 525252525200 @030730
MUL(525252525252,000000000100) PDP-10: 525252525200 JavaScript: 525252525200 @030730
MUL(525252525252,000000000200) PDP-10: 652525252400 JavaScript: 252525252400 @030743
MUL(525252525252,000000000200) PDP-10: 652525252400 JavaScript: 252525252400 @030743
MUL(525252525252,000000000400) PDP-10: 525252525000 JavaScript: 525252525000 @030756
MUL(525252525252,000000000400) PDP-10: 525252525000 JavaScript: 525252525000 @030756
MUL(525252525252,000000001000) PDP-10: 652525252000 JavaScript: 252525252000 @030771
MUL(525252525252,000000001000) PDP-10: 652525252000 JavaScript: 252525252000 @030771
MUL(525252525252,000000002000) PDP-10: 525252524000 JavaScript: 525252524000 @031004
MUL(525252525252,000000002000) PDP-10: 525252524000 JavaScript: 525252524000 @031004
MUL(525252525252,000000004000) PDP-10: 652525250000 JavaScript: 252525250000 @031017
MUL(525252525252,000000004000) PDP-10: 652525250000 JavaScript: 252525250000 @031017
MUL(525252525252,000000010000) PDP-10: 525252520000 JavaScript: 525252520000 @031032
MUL(525252525252,000000010000) PDP-10: 525252520000 JavaScript: 525252520000 @031032
MUL(525252525252,000000020000) PDP-10: 652525240000 JavaScript: 252525240000 @031045
MUL(525252525252,000000020000) PDP-10: 652525240000 JavaScript: 252525240000 @031045
MUL(525252525252,000000040000) PDP-10: 525252500000 JavaScript: 525252500000 @031060
MUL(525252525252,000000040000) PDP-10: 525252500000 JavaScript: 525252500000 @031060
MUL(525252525252,000000100000) PDP-10: 652525200000 JavaScript: 252525200000 @031073
MUL(525252525252,000000100000) PDP-10: 652525200000 JavaScript: 252525200000 @031073
MUL(525252525252,000000200000) PDP-10: 525252400000 JavaScript: 525252400000 @031106
MUL(525252525252,000000200000) PDP-10: 525252400000 JavaScript: 525252400000 @031106
MUL(525252525252,000000400000) PDP-10: 652525000000 JavaScript: 252525000000 @031121
MUL(525252525252,000000400000) PDP-10: 652525000000 JavaScript: 252525000000 @031121
MUL(525252525252,000001000000) PDP-10: 125252000000 JavaScript: 525252000000 @031134
MUL(525252525252,000004000000) PDP-10: 125250000000 JavaScript: 525250000000 @031162
MUL(525252525252,000020000000) PDP-10: 125240000000 JavaScript: 525240000000 @031210
MUL(525252525252,000100000000) PDP-10: 125200000000 JavaScript: 525200000000 @031236
MUL(525252525252,000400000000) PDP-10: 125000000000 JavaScript: 525000000000 @031264
MUL(525252525252,002000000000) PDP-10: 124000000000 JavaScript: 524000000000 @031312
MUL(525252525252,010000000000) PDP-10: 120000000000 JavaScript: 520000000000 @031340
MUL(525252525252,040000000000) PDP-10: 100000000000 JavaScript: 500000000000 @031366
MUL(525252525252,200000000000) PDP-10: 000000000000 JavaScript: 400000000000 @031414
MUL(525252525252,400000000000) PDP-10: 000000000000 JavaScript: 000000000000 @031427
MUL(252525252525,000000000002) PDP-10: 125252525252 JavaScript: 525252525252 @031461
MUL(252525252525,000000000004) PDP-10: 252525252524 JavaScript: 252525252524 @031474
MUL(252525252525,000000000010) PDP-10: 125252525250 JavaScript: 525252525250 @031507
MUL(252525252525,000000000020) PDP-10: 252525252520 JavaScript: 252525252520 @031522
MUL(252525252525,000000000040) PDP-10: 125252525240 JavaScript: 525252525240 @031535
MUL(252525252525,000000000100) PDP-10: 252525252500 JavaScript: 252525252500 @031550
MUL(252525252525,000000000200) PDP-10: 125252525200 JavaScript: 525252525200 @031563
MUL(252525252525,000000000400) PDP-10: 252525252400 JavaScript: 252525252400 @031576
MUL(252525252525,000000001000) PDP-10: 125252525000 JavaScript: 525252525000 @031611
MUL(252525252525,000000002000) PDP-10: 252525252000 JavaScript: 252525252000 @031624
MUL(252525252525,000000004000) PDP-10: 125252524000 JavaScript: 525252524000 @031637
MUL(252525252525,000000010000) PDP-10: 252525250000 JavaScript: 252525250000 @031652
MUL(252525252525,000000020000) PDP-10: 125252520000 JavaScript: 525252520000 @031665
MUL(252525252525,000000040000) PDP-10: 252525240000 JavaScript: 252525240000 @031700
MUL(252525252525,000000100000) PDP-10: 125252500000 JavaScript: 525252500000 @031713
MUL(252525252525,000000200000) PDP-10: 252525200000 JavaScript: 252525200000 @031726
MUL(252525252525,000000400000) PDP-10: 125252400000 JavaScript: 525252400000 @031741
MUL(252525252525,000001000000) PDP-10: 252525000000 JavaScript: 252525000000 @031754
MUL(252525252525,000002000000) PDP-10: 125252000000 JavaScript: 525252000000 @031767
MUL(252525252525,000004000000) PDP-10: 252524000000 JavaScript: 252524000000 @032002
MUL(252525252525,000010000000) PDP-10: 125250000000 JavaScript: 525250000000 @032015
MUL(252525252525,000020000000) PDP-10: 252520000000 JavaScript: 252520000000 @032030
MUL(252525252525,000040000000) PDP-10: 125240000000 JavaScript: 525240000000 @032043
MUL(252525252525,000100000000) PDP-10: 252500000000 JavaScript: 252500000000 @032056
MUL(252525252525,000200000000) PDP-10: 125200000000 JavaScript: 525200000000 @032071
MUL(252525252525,000400000000) PDP-10: 252400000000 JavaScript: 252400000000 @032104
MUL(252525252525,001000000000) PDP-10: 125000000000 JavaScript: 525000000000 @032117
MUL(252525252525,002000000000) PDP-10: 252000000000 JavaScript: 252000000000 @032132
MUL(252525252525,004000000000) PDP-10: 124000000000 JavaScript: 524000000000 @032145
MUL(252525252525,010000000000) PDP-10: 250000000000 JavaScript: 250000000000 @032160
MUL(252525252525,020000000000) PDP-10: 120000000000 JavaScript: 520000000000 @032173
MUL(252525252525,040000000000) PDP-10: 240000000000 JavaScript: 240000000000 @032206
MUL(252525252525,100000000000) PDP-10: 100000000000 JavaScript: 500000000000 @032221
MUL(252525252525,200000000000) PDP-10: 200000000000 JavaScript: 200000000000 @032234
MUL(252525252525,000000000002) PDP-10: 125252525252 JavaScript: 525252525252 @032301
MUL(252525252525,000000000004) PDP-10: 252525252524 JavaScript: 252525252524 @032314
MUL(252525252525,000000000010) PDP-10: 125252525250 JavaScript: 525252525250 @032327
MUL(252525252525,000000000020) PDP-10: 252525252520 JavaScript: 252525252520 @032342
MUL(252525252525,000000000040) PDP-10: 125252525240 JavaScript: 525252525240 @032355
MUL(252525252525,000000000100) PDP-10: 252525252500 JavaScript: 252525252500 @032370
MUL(252525252525,000000000200) PDP-10: 125252525200 JavaScript: 525252525200 @032403
MUL(252525252525,000000000400) PDP-10: 252525252400 JavaScript: 252525252400 @032416
MUL(252525252525,000000001000) PDP-10: 125252525000 JavaScript: 525252525000 @032431
MUL(252525252525,000000002000) PDP-10: 252525252000 JavaScript: 252525252000 @032444
MUL(252525252525,000000004000) PDP-10: 125252524000 JavaScript: 525252524000 @032457
MUL(252525252525,000000010000) PDP-10: 252525250000 JavaScript: 252525250000 @032472
MUL(252525252525,000000020000) PDP-10: 125252520000 JavaScript: 525252520000 @032505
MUL(252525252525,000000040000) PDP-10: 252525240000 JavaScript: 252525240000 @032520
MUL(252525252525,000000100000) PDP-10: 125252500000 JavaScript: 525252500000 @032533
MUL(252525252525,000000200000) PDP-10: 252525200000 JavaScript: 252525200000 @032546
MUL(252525252525,000000400000) PDP-10: 125252400000 JavaScript: 525252400000 @032561
MUL(252525252525,000001000000) PDP-10: 252525000000 JavaScript: 252525000000 @032574
MUL(252525252525,000002000000) PDP-10: 125252000000 JavaScript: 525252000000 @032607
MUL(252525252525,000004000000) PDP-10: 252524000000 JavaScript: 252524000000 @032622
MUL(252525252525,000010000000) PDP-10: 125250000000 JavaScript: 525250000000 @032635
MUL(252525252525,000020000000) PDP-10: 252520000000 JavaScript: 252520000000 @032650
MUL(252525252525,000040000000) PDP-10: 125240000000 JavaScript: 525240000000 @032663
MUL(252525252525,000100000000) PDP-10: 252500000000 JavaScript: 252500000000 @032676
MUL(252525252525,000200000000) PDP-10: 125200000000 JavaScript: 525200000000 @032711
MUL(252525252525,000400000000) PDP-10: 252400000000 JavaScript: 252400000000 @032724
MUL(252525252525,001000000000) PDP-10: 125000000000 JavaScript: 525000000000 @032737
MUL(252525252525,002000000000) PDP-10: 252000000000 JavaScript: 252000000000 @032752
MUL(252525252525,004000000000) PDP-10: 124000000000 JavaScript: 524000000000 @032765
MUL(252525252525,010000000000) PDP-10: 250000000000 JavaScript: 250000000000 @033000
MUL(252525252525,020000000000) PDP-10: 120000000000 JavaScript: 520000000000 @033013
MUL(252525252525,040000000000) PDP-10: 240000000000 JavaScript: 240000000000 @033026
MUL(252525252525,100000000000) PDP-10: 100000000000 JavaScript: 500000000000 @033041
MUL(252525252525,200000000000) PDP-10: 200000000000 JavaScript: 200000000000 @033054
MUL(252525252525,400000000000) PDP-10: 000000000000 JavaScript: 400000000000 @033067
MUL(000001000000,000001000000) PDP-10: 000000000000 JavaScript: 000000000000 @033414
MUL(000002000000,000002000000) PDP-10: 000000000000 JavaScript: 000000000000 @033427
MUL(000004000000,000004000000) PDP-10: 000000000000 JavaScript: 000000000000 @033442
MUL(000010000000,000010000000) PDP-10: 000000000000 JavaScript: 000000000000 @033455
MUL(000020000000,000020000000) PDP-10: 000000000000 JavaScript: 000000000000 @033470
MUL(000040000000,000040000000) PDP-10: 000000000000 JavaScript: 000000000000 @033503
MUL(000100000000,000100000000) PDP-10: 000000000000 JavaScript: 000000000000 @033516
MUL(000200000000,000200000000) PDP-10: 000000000000 JavaScript: 000000000000 @033531
MUL(000400000000,000400000000) PDP-10: 000000000000 JavaScript: 000000000000 @033544
MUL(001000000000,001000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033557
MUL(002000000000,002000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033572
MUL(004000000000,004000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033605
MUL(010000000000,010000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033620
MUL(020000000000,020000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033633
MUL(040000000000,040000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033646
MUL(100000000000,100000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033661
MUL(200000000000,200000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033674
MUL(400000000000,400000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033707
MUL(400000000000,400000000000) PDP-10: 000000000000 JavaScript: 000000000000 @033707
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033726
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033726
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033741
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033741
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033754
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033754
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033767
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @033767
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034002
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034002
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034015
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034015
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034030
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034030
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034043
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034043
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034056
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034056
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034071
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034071
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034104
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034104
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034117
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034117
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034132
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034132
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034145
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034145
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034160
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034160
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034173
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034173
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034206
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034206
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034221
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034221
MUL(777776777777,777776777777) PDP-10: 000002000001 JavaScript: 000002000001 @034234
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034234
MUL(000000777777,000000777777) PDP-10: 377776000001 JavaScript: 777776000001 @034234
MUL(777775777777,777775777777) PDP-10: 000004000001 JavaScript: 000004000001 @034247
MUL(000000777776,000000777776) PDP-10: 377774000004 JavaScript: 777774000004 @034247
MUL(000000777776,000000777776) PDP-10: 377774000004 JavaScript: 777774000004 @034247
MUL(777773777777,777773777777) PDP-10: 000010000001 JavaScript: 000010000001 @034262
MUL(000000777774,000000777774) PDP-10: 377770000020 JavaScript: 777770000020 @034262
MUL(000000777774,000000777774) PDP-10: 377770000020 JavaScript: 777770000020 @034262
MUL(777767777777,777767777777) PDP-10: 000020000001 JavaScript: 000020000001 @034275
MUL(000000777770,000000777770) PDP-10: 377760000100 JavaScript: 777760000100 @034275
MUL(000000777770,000000777770) PDP-10: 377760000100 JavaScript: 777760000100 @034275
MUL(777757777777,777757777777) PDP-10: 000040000001 JavaScript: 000040000001 @034310
MUL(000000777760,000000777760) PDP-10: 377740000400 JavaScript: 777740000400 @034310
MUL(000000777760,000000777760) PDP-10: 377740000400 JavaScript: 777740000400 @034310
MUL(777737777777,777737777777) PDP-10: 000100000001 JavaScript: 000100000001 @034323
MUL(000000777740,000000777740) PDP-10: 377700002000 JavaScript: 777700002000 @034323
MUL(000000777740,000000777740) PDP-10: 377700002000 JavaScript: 777700002000 @034323
MUL(777677777777,777677777777) PDP-10: 000200000001 JavaScript: 000200000001 @034336
MUL(000000777700,000000777700) PDP-10: 377600010000 JavaScript: 777600010000 @034336
MUL(000000777700,000000777700) PDP-10: 377600010000 JavaScript: 777600010000 @034336
MUL(777577777777,777577777777) PDP-10: 000400000001 JavaScript: 000400000001 @034351
MUL(000000777600,000000777600) PDP-10: 377400040000 JavaScript: 777400040000 @034351
MUL(000000777600,000000777600) PDP-10: 377400040000 JavaScript: 777400040000 @034351
MUL(777377777777,777377777777) PDP-10: 001000000001 JavaScript: 001000000001 @034364
MUL(000000777400,000000777400) PDP-10: 377000200000 JavaScript: 777000200000 @034364
MUL(000000777400,000000777400) PDP-10: 377000200000 JavaScript: 777000200000 @034364
MUL(776777777777,776777777777) PDP-10: 002000000000 JavaScript: 002000000000 @034377
MUL(000000777000,000000777000) PDP-10: 376001000000 JavaScript: 776001000000 @034377
MUL(000000777000,000000777000) PDP-10: 376001000000 JavaScript: 776001000000 @034377
MUL(775777777777,775777777777) PDP-10: 004000000000 JavaScript: 004000000000 @034412
MUL(000000776000,000000776000) PDP-10: 374004000000 JavaScript: 774004000000 @034412
MUL(000000776000,000000776000) PDP-10: 374004000000 JavaScript: 774004000000 @034412
MUL(773777777777,773777777777) PDP-10: 010000000000 JavaScript: 010000000000 @034425
MUL(000000774000,000000774000) PDP-10: 370020000000 JavaScript: 770020000000 @034425
MUL(000000774000,000000774000) PDP-10: 370020000000 JavaScript: 770020000000 @034425
MUL(767777777777,767777777777) PDP-10: 020000000000 JavaScript: 020000000000 @034440
MUL(000000770000,000000770000) PDP-10: 360100000000 JavaScript: 760100000000 @034440
MUL(000000770000,000000770000) PDP-10: 360100000000 JavaScript: 760100000000 @034440
MUL(757777777777,757777777777) PDP-10: 040000000000 JavaScript: 040000000000 @034453
MUL(000000760000,000000760000) PDP-10: 340400000000 JavaScript: 740400000000 @034453
MUL(000000760000,000000760000) PDP-10: 340400000000 JavaScript: 740400000000 @034453
MUL(737777777777,737777777777) PDP-10: 100000000000 JavaScript: 100000000000 @034466
MUL(000000740000,000000740000) PDP-10: 302000000000 JavaScript: 702000000000 @034466
MUL(000000740000,000000740000) PDP-10: 302000000000 JavaScript: 702000000000 @034466
MUL(677777777777,677777777777) PDP-10: 200000000000 JavaScript: 200000000000 @034501
MUL(000000700000,000000700000) PDP-10: 210000000000 JavaScript: 610000000000 @034501
MUL(000000700000,000000700000) PDP-10: 210000000000 JavaScript: 610000000000 @034501
MUL(577777777777,577777777777) PDP-10: 000000000000 JavaScript: 400000000000 @034514
MUL(000000600000,000000600000) PDP-10: 040000000000 JavaScript: 440000000000 @034514
MUL(377777777777,377777777777) PDP-10: 000000000001 JavaScript: 000000000000 @034527
MUL(000001000000,777776777777) PDP-10: 377777000000 JavaScript: 777777000000 @035054
MUL(000002000000,777775777777) PDP-10: 377776000000 JavaScript: 777776000000 @035067
MUL(000004000000,777773777777) PDP-10: 377774000000 JavaScript: 777774000000 @035102
MUL(000010000000,777767777777) PDP-10: 377770000000 JavaScript: 777770000000 @035115
MUL(000020000000,777757777777) PDP-10: 377760000000 JavaScript: 777760000000 @035130
MUL(000040000000,777737777777) PDP-10: 377740000000 JavaScript: 777740000000 @035143
MUL(000100000000,777677777777) PDP-10: 377700000000 JavaScript: 777700000000 @035156
MUL(000200000000,777577777777) PDP-10: 377600000000 JavaScript: 777600000000 @035171
MUL(000400000000,777377777777) PDP-10: 377400000000 JavaScript: 777400000000 @035204
MUL(001000000000,776777777777) PDP-10: 377000000000 JavaScript: 777000000000 @035217
MUL(002000000000,775777777777) PDP-10: 376000000000 JavaScript: 776000000000 @035232
MUL(004000000000,773777777777) PDP-10: 374000000000 JavaScript: 774000000000 @035245
MUL(010000000000,767777777777) PDP-10: 370000000000 JavaScript: 770000000000 @035260
MUL(020000000000,757777777777) PDP-10: 360000000000 JavaScript: 760000000000 @035273
MUL(040000000000,737777777777) PDP-10: 340000000000 JavaScript: 740000000000 @035306
MUL(100000000000,677777777777) PDP-10: 300000000000 JavaScript: 700000000000 @035321
MUL(200000000000,577777777777) PDP-10: 200000000000 JavaScript: 600000000000 @035334
MUL(400000000000,377777777777) PDP-10: 000000000000 JavaScript: 400000000000 @035347
MUL(000001000000,777776777777) PDP-10: 377777000000 JavaScript: 777777000000 @035674
MUL(000002000000,777775777777) PDP-10: 377776000000 JavaScript: 777776000000 @035707
MUL(000004000000,777773777777) PDP-10: 377774000000 JavaScript: 777774000000 @035722
MUL(000010000000,777767777777) PDP-10: 377770000000 JavaScript: 777770000000 @035735
MUL(000020000000,777757777777) PDP-10: 377760000000 JavaScript: 777760000000 @035750
MUL(000040000000,777737777777) PDP-10: 377740000000 JavaScript: 777740000000 @035763
MUL(000100000000,777677777777) PDP-10: 377700000000 JavaScript: 777700000000 @035776
MUL(000200000000,777577777777) PDP-10: 377600000000 JavaScript: 777600000000 @036011
MUL(000400000000,777377777777) PDP-10: 377400000000 JavaScript: 777400000000 @036024
MUL(001000000000,776777777777) PDP-10: 377000000000 JavaScript: 777000000000 @036037
MUL(002000000000,775777777777) PDP-10: 376000000000 JavaScript: 776000000000 @036052
MUL(004000000000,773777777777) PDP-10: 374000000000 JavaScript: 774000000000 @036065
MUL(010000000000,767777777777) PDP-10: 370000000000 JavaScript: 770000000000 @036100
MUL(020000000000,757777777777) PDP-10: 360000000000 JavaScript: 760000000000 @036113
MUL(040000000000,737777777777) PDP-10: 340000000000 JavaScript: 740000000000 @036126
MUL(100000000000,677777777777) PDP-10: 300000000000 JavaScript: 700000000000 @036141
MUL(200000000000,577777777777) PDP-10: 200000000000 JavaScript: 600000000000 @036154
MUL(000000000010,377777777777) PDP-10: 377777777770 JavaScript: 777777777770 @000000
MUL(000000000020,377777777777) PDP-10: 377777777760 JavaScript: 777777777760 @000000
---
DAKAL.TXT

View file

@ -6326,6 +6326,8 @@ PDP10.doDIV = function(dst, ext, src)
* PDP-10 "DAKAK" Diagnostic Notes
* -------------------------------
*
* The DAKAK diagnostic contains the following code:
*
* 036174: 200240 043643 MOVE 5,43643 ; [43643] = 400000000000
* 036175: 200300 043603 MOVE 6,43603 ; [43603] = 777777777777
* 036176: 200140 043604 MOVE 3,43604 ; [43604] = 000000000001

View file

@ -519,7 +519,16 @@ class DebuggerPDP10 extends Debugger {
*/
evalMUL(dst, src)
{
return PDP10.doMUL.call(this.cpu, dst, src, false, true);
var result = PDP10.doMUL.call(this.cpu, dst, src, false, true);
if (MAXDEBUG) {
var resultJS = this.truncate(dst * src);
if (resultJS !== result) {
var sReference = this.macro10? (" @" + this.toStrBase(this.macro10.nLocation)) : "";
var sResults = "PDP-10: " + this.toStrBase(result, 36) + " JavaScript: " + this.toStrBase(resultJS, 36);
this.println("MUL(" + this.toStrBase(dst, 36) + "," + this.toStrBase(src, 36) + ") " + sResults + sReference);
}
}
return result;
}
/**