Jeff Parsons
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06324dd499
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Minor PDP-10 debugger alignment change
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2017-02-27 12:27:23 -08:00 |
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Jeff Parsons
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17e807ecb6
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Tested a couple half-word instructions (so far, so good)
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2017-02-27 12:25:13 -08:00 |
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Jeff Parsons
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0255b7b891
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Implemented all four primary half-word moves (HLL, HLR, HRL, HRR) but none of the flavors (Z, O, E); need to test the primary instructions first
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2017-02-27 09:50:28 -08:00 |
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Jeff Parsons
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aecd943c52
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Added support for PDP-10 RAM images
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2017-02-26 20:37:16 -08:00 |
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Jeff Parsons
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6cf141baf9
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getOpcode() can now handle infinite indirections without starving the emulator
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2017-02-26 12:17:21 -08:00 |
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Jeff Parsons
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ed4c031035
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Implemented my first 4 PDP-10 opcodes (HLL, HLLI, HLLM, HLLS)
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2017-02-26 10:51:49 -08:00 |
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Jeff Parsons
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0451774bc6
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Added preliminary PDP-10 opcode decoding
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2017-02-26 09:25:44 -08:00 |
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Jeff Parsons
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e3ab5b1ed5
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Added preliminary PDP-10 opcode decoding
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2017-02-26 09:13:16 -08:00 |
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Jeff Parsons
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3e30bde786
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Some PDP-10 disassembler clean-up
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2017-02-25 21:19:41 -08:00 |
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Jeff Parsons
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cb4d054ead
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Added preliminary first-order opcode dispatch table
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2017-02-25 16:21:21 -08:00 |
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Jeff Parsons
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b628219f5c
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Used the new PDP-10 disassembler in test mode to help generate the cpuops.js skeleton
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2017-02-25 13:28:47 -08:00 |
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Jeff Parsons
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10181fdc45
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Added I/O instructions to PDP-10 disassembler
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2017-02-25 10:45:25 -08:00 |
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Jeff Parsons
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3b27f45b76
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Added disassembly of basic PDP-10 operations
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2017-02-24 23:15:53 -08:00 |
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Jeff Parsons
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da3bb4740c
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Fixed PDP-10 test panel updates
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2017-02-24 13:09:46 -08:00 |
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Jeff Parsons
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ef70ed74b3
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Added support for parsing of values (ie, integers) greater than 32 bits, and fixed PDP-10 Bus writes (parameter order differs from other emulators)
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2017-02-24 13:07:38 -08:00 |
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Jeff Parsons
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c0de732f76
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Changed toStrBase() to accept a number of bits rather than a number of bytes, because bytes aren't always 8 bits (see PDP-10)
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2017-02-24 10:58:56 -08:00 |
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Jeff Parsons
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884b74d96f
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Cleaned up PDP register dump code
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2017-02-23 16:56:08 -08:00 |
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Jeff Parsons
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8320f58d44
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Documentation updates to accommodate the PDP-10 work that's starting now
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2017-02-23 15:14:51 -08:00 |
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Jeff Parsons
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c25ad00c41
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Minimal infrastructure for instantiating a PDP-10 test machine
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2017-02-23 11:34:19 -08:00 |
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Jeff
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0aa88da301
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Updated information on PDP timings
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2017-02-23 09:02:48 -08:00 |
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Jeff
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2ed076503f
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Since writeBitsMemory() must preserve unwritten bits, it can't use bit-wise operators (unless of course no bits above bit 31 are set, but it's not clear checking for that would be a win)
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2017-02-22 15:33:18 -08:00 |
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Jeff Parsons
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b8b774696b
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Since writeBitsMemory() must preserve unwritten bits, it can't use bit-wise operators (unless of course no bits above bit 31 are set, but it's not clear checking for that would be a win)
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2017-02-19 15:49:08 -08:00 |
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Jeff Parsons
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ba7de38fbf
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Created PDP-10 skeleton
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2017-02-19 15:22:58 -08:00 |
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Jeff Parsons
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b1d16c979a
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Removed obsolete version of Int36 (using signed integers internally); sticking with unsigned integers internally not only simplifies some of the existing logic, but will make it easier to add logical operations later (eg, AND, OR, XOR, etc)
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2017-02-18 09:36:47 -08:00 |
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Jeff Parsons
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acdf89ec54
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Make Int36 toDecimal() more paranoid (we want perfect output, or no output at all)
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2017-02-18 09:28:43 -08:00 |
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Jeff Parsons
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c1ab8918bd
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Make Int36 toDecimal() more paranoid (we want perfect output, or no output at all)
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2017-02-18 09:23:45 -08:00 |
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Jeff Parsons
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7770a6bffe
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Added an "early out" for Int36 division
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2017-02-18 09:17:08 -08:00 |
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Jeff Parsons
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3f65a1b770
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Simplify Int36 bit handling (only affects division)
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2017-02-18 08:50:24 -08:00 |
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Jeff Parsons
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242fa1545c
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Put back some redirects that external sites are using
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2017-02-17 15:53:46 -08:00 |
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Jeff Parsons
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55bb0252b7
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Be more specific about detected errors
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2017-02-17 13:38:34 -08:00 |
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Jeff Parsons
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cff039f6a5
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Added the reduce() function, to reduce 72-bit extended values to 36-bit values, magnitude permitting
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2017-02-17 13:31:17 -08:00 |
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Jeff Parsons
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689adca2a7
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Comment updates
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2017-02-17 12:15:48 -08:00 |
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Jeff Parsons
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688fa635c8
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Clarified the operation of negate(), added an explicit extend(), and made toDecimal() more robust (in case we end up with goofy values)
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2017-02-17 11:52:36 -08:00 |
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Jeff Parsons
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80756041f3
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Int36.toDecimal() now supports any value up to 72 bits
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2017-02-16 15:58:50 -08:00 |
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Jeff Parsons
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4de50acdf1
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Added alternate Int36 addition/subtraction overflow/underflow detection logic as a verification check
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2017-02-16 14:05:05 -08:00 |
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Jeff Parsons
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048a10aac6
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Fixed toDecimal() for large extended Int36 values (although there are still some very large values that trigger an error)
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2017-02-15 23:43:23 -08:00 |
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Jeff Parsons
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4d94b5812b
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Cleaned up divExtended()
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2017-02-15 22:27:03 -08:00 |
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Jeff Parsons
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40311e82b2
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Added Int36 overflow/underflow detection
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2017-02-15 22:20:07 -08:00 |
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Jeff Parsons
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798fae1898
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Updated Int36 comments
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2017-02-15 16:35:15 -08:00 |
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Jeff Parsons
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6bc0d8ac49
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Trying a second approach to the Int36 class that sticks to unsigned numbers internally (only downside so far is that the detecting arithmetic overflow/underflow is more work and hasn't been implemented yet)
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2017-02-15 16:16:32 -08:00 |
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Jeff Parsons
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259dd7d66f
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Updated comments
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2017-02-15 11:54:16 -08:00 |
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Jeff Parsons
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3a33ffdd50
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A few more toDecimal() fixes
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2017-02-14 17:55:41 -08:00 |
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Jeff Parsons
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656f7e6796
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Numerous fixes to Int36 class, with improved support for 72-bit mul(), div(), and toString()/toDecimal()
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2017-02-14 13:12:27 -08:00 |
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Jeff Parsons
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7131e471ac
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Implemented 36-bit division with support for (up to) 72-bit dividends
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2017-02-13 14:04:00 -08:00 |
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Jeff Parsons
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a0ddaa2239
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Implemented 36-bit multiplication with support for (up to) 72-bit results
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2017-02-13 11:55:29 -08:00 |
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Jeff Parsons
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f03a5686e5
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Implemented 36-bit multiplication with support for (up to) 72-bit results
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2017-02-13 11:46:58 -08:00 |
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Jeff Parsons
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92a919c927
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Avoid reallocating 64-bit register arrays on every 64-bit division
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2017-02-12 22:24:06 -08:00 |
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Jeff Parsons
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bfab39cf5a
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Skeleton of an Int36 class that may be used to support 36-bit integers in a PDP-10 simulation
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2017-02-12 11:21:49 -08:00 |
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Jeff Parsons
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c119552c06
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A few minor edits/corrections
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2017-02-09 16:35:26 -08:00 |
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Jeff Parsons
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4c5cfd8158
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A few minor edits/corrections
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2017-02-09 16:14:04 -08:00 |
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