Here is a list of known "bugs"/"features" in the Transputer Instruction Set/Compiler Writer's Guide book. If you are aware of any others please email me with details (d...@inmos.co.uk or d...@inmos.com) so that I can update this list. david shepherd PS 1) I am not, nor ever have been, a member of the documentation group at INMOS and thus I have no knowledge of what they are producing for more recent transputer variants (e.g. T425) or even H-1 so don't bother asking me! 2) Please do not send me your list of "everything I always wanted to know about the transputer instruction set" questions as I don't have time to handle such questions. ------------------------------------------------------------------------ Transputer Instruction Set A compiler writer's guide Errata sheet David Shepherd November 27, 1990 This is an ascii-ized version of a LaTeX document. Unavailable symbols have been replaced by words were necessary. Page Line Date Description 38 20 21-jun-90 Add to end of paragraph "stoperr also saves the Iptr of an erroneous process in (Wptr-1) before scheduling the next process to allow it to be analyzed or restarted later." 46 16 10-jan-90 The workspace pointer must have the same value at each of the alt, altwt, altend and enable or disable instructions. It may however be changed, for example, while evaluating an argument to an enable instruction. However, (Wptr-3) must not be changed between the alt and altend. 55 -2 28-jun-90 bracketting wrong - should be and exists m:Z, r:[-pi,pi] . x = (m times 2 pi) + r and (r = x, REM, 2 pi) 65 -1 10-apr-89 should read "... this will include the most significant bit ... " 67 -6 21-jun-90 Add new paragraph: The current process must not be descheduled between the move2dinit and the actual 2d move instruction. 78 1-13 1-sep-88 Descriptions of j and lend should state that the jump has not been taken rather than has as in original version. Descriptions of stopp, in and out should also say that Wptr-1 has been set to the value of Iptr. 84 -12 7-aug-90 add a new section Memstart MemStart is the address of the first word above the special RAM locations at the bottom of the memory map. Because different transputer variants store different information in these special RAM locations MemStart differs between variants. The values for current processors are IMS T212 #8024 IMS T414 #80000048 IMS T425 #80000070 IMS T800 #80000070 the values for these and other variants are given in the relevant datasheets. 85 8 7-nov-89 "(Wptr-3) ... contains the address of the data to be transferred." Instead of "... address of the channel being used." 91 -10 21-jun-90 should be ldnlp x-offset not ldlp x-offset 92 4 22-jul-88 "ldl x; E; wsub" should be "E; ldl x; wsub" 117 -1 22-aug-88 Code for out should be #0B 118 -7,-6 3-nov-88 Cycles for lsum and ldiff should be 3 not 2 118 -15 21-jun-90 Change the Cycles for stoperr to "dagger" as it depends on the error state - the value given is for when the error is not set. 120 -10- -7 8-feb-89 Cycles for fpldnlsn, fpldnldb, fpldnlsni and fpldnldbi should be 2,4,4 and 6 respectively. 131 -2 23-aug-90 Far too many "the's" - the "the the" should be "the'! 132 9-12 30-oct-89 Should be ByteMem and not Mem 134 20 31-aug-88 In specification of call add Breg' = undefined Creg' = undefined 134 24 26-jun-90 0 7! NextInst not Iptr 135 -17,-15 9-jul-90 delete "or (Areg = -1 and Breg = -2**(wordlength- 1))" and the corresponding term 2 lines below 136 -17,-11 16-oct-89 should be "Areg <=(unsigned) wordlength" in both cases 140 13,26 26-jun-90 occuring spelt wrong 142 -11 23-mar-89 should read ... `schedule next waiting process saving Iptr in current workspace' 142 -4 25-jun-90 condition of implication should be "Areg <= Breg < 2 x Areg" 150 -9 21-jun-90 should be "@value" and not "value" 152 6,7 13-sep-88 both occurences of Breg should be Breg x 2 159 18,25 20-jun-90 The precondition fv FAreg "in" [MinINT32,MaxINT32] should be removed. Line 25 should be Mem' = Mem "overwrite" f Areg "mapsto" (RETYPE []INT(INT"infinity" TRUNC pack(FAreg))[0]g Remember, the Transputer Instruction Set book only covers the IMS T212, IMS T414 and IMS T800. Subsequent transputers have some additional features which are not documented here. Additional documentation should be available for these. -------------------------------------------------------------------------- david shepherd: d...@inmos.co.uk or d...@inmos.com tel: 0454-616616 x 529 inmos ltd, 1000 aztec west, almondsbury, bristol, bs12 4sq phevbfvgl xvyyrq gur png