EFIDynoTuning Forum

If it isn't a quick easy simple fix then do not worry about it, just figured I would ask about it. May not bother most everyone else. Like I said I am so very new to all of this. I can go back and forth as needed. I am not trying to create any unnecessary work for you. Thanks

jsa wrote: ↑2024 Dec 13, 14:45 C6 is Indirect address mode.

Software_Manual wrote:
R28 holds a word length address, so bytes 1 & 3 are combined as the word length address destination, with a store size of one byte, for the byte length data held in source R2B.
Byte1/R29 is the address word high byte.
Byte3/R28 is the address word low byte.

Reading the STB - Store Byte opcode description, there is absolutely zero mention of 'WORD'.

STB can transfer an 8-bit "B" operand to any 8-bit "A" operand location in memory

You are describing STW

STW can transfer a 16-bit "B" operand to any 16-bit "A" operand location in memory

wwhite wrote: ↑2024 Dec 14, 12:09 Reading the STB - Store Byte opcode description, there is absolutely zero mention of 'WORD'.

That's true. I think that is true for all opcode descriptions actually. In the 'address modes' section of manuals, in a different place from opcode descriptions, it does say that all addresses (indirect and indexed) are treated as 16 bit words. I still reckon I haven't found anywhere where it says that byte offsets in indexed mode are signed, but we know they are from the bins.

There are still a few odd details about the CPUs which I reckon are still technically 'unknown' even with the official Ford manual. Quite a lot of the 'special chips' (DUCE) etc are also not well documented and down to guesswork.

BOOSTEDEVERYTHING wrote: ↑2024 Dec 14, 10:04 It just will not print the labels on arg lines. I used the same DIR, CMT, and BIN files for both versions and here is the same section of code from each.
<snip>

I remember that problem and thought I had fixed it. Damn.

Thinking about where v4 is up to it's probably about time to release 4.12 as stable anyway.
It seems to get used a lot (from comments here).

Yes, been too focussed on trying to get V5 to work right. It uses a different method to analyse/disassemble the bin file.

So I shall reload 4.12 source and try to reproduce/fix the problem, so it will become 4.13.1, and I will also do a tidy up in Github.

the way I see it is that

STW and STB are the only opcodes which can store/write a value outside the CPU registers, so they are, in effect, a 'reverse' LDX and LDB.

(oops, PUSH, PUSHP also write outside the CPU too)

wwhite wrote: ↑2024 Dec 14, 12:09 Reading the STB - Store Byte opcode description, there is absolutely zero mention of 'WORD'.

Indeed, the expectation being that address modes are well understood.

For STB I said;
R28 holds a word length address, so bytes 1 & 3 are combined as the word length address destination, with a store size of one byte, for the byte length data held in source R2B.
Byte1/R29 is the address word high byte.
Byte3/R28 is the address word low byte.

For STW I'd say;
R28 holds a word length address, so bytes 1 & 3 are combined as the word length address destination, with a store size of one word, for the word length data held in source R2A as an example.
Byte1/R29 is the address word high byte.
Byte3/R28 is the address word low byte.

Software_manual wrote: 3-2.3.5 INDIRECT ADDRESS MODE
.
.
location between addresses ^0000 to '^FFFF using a 16-bit effective address(EA). The 16-bit effective address is
stored as a WORD variable
.
.

BOOSTEDEVERYTHING wrote: ↑2024 Dec 14, 10:04 It just will not print the labels on arg lines. I used the same DIR, CMT, and BIN files for both versions and here is the same section of code from each.

V4.012

Code: Select all

Sbg07F12_RZAxxxxx_21.1.18.10_AIR_SELF_TEST_EO:
07f12: a0,79,26           ldw   R26,R178         TEMP1L = IMAF;
07f15: 8b,fe,0a,26        cmpw  R26,[Rfe+a]      
07f19: d1,13              jleu  07f2e            if (TEMP1L <= MAF_HI_KOEO) goto 07f2e; }

     # JGTU  from L07F07                                                           Sbg07EF0_RZA9BC2F_21.1.18.5_AIR_SELF_TEST_ER_ENTRY
     # SJump from L07F0F                                                           Sbg07EF0_RZA9BC2F_21.1.18.5_AIR_SELF_TEST_ER_ENTRY
07f1b: b3,d8,2d,c6        ldb   Rc6,[Rd8+2d]     FLAGTEMP_BG = AIR_BACK_FLAGS;
07f1f: 3b,c6,0c           jb    B3,Rc6,07f2e     if (B3_FLAGTEMP_BG = 0)  {
07f22: b3,d8,2d,c6        ldb   Rc6,[Rd8+2d]     FLAGTEMP_BG = AIR_BACK_FLAGS;
07f26: 3a,c6,05           jb    B2,Rc6,07f2e     if (B2_FLAGTEMP_BG = 0)  {
07f29: ef,2e,59           call  0d85a            Sxx0D85A_ALSO_RZA0F887_39.1.1.2.8_STORE_CODE(&Pxxx) (
07f2c: 9e,0a                    #arg 1              a9e ); } } } } } }

     # JLEU  from L07EF5                                                           Sbg07EF0_RZA9BC2F_21.1.18.5_AIR_SELF_TEST_ER_ENTRY
     # JLEU  from L07EFE                                                           Sbg07EF0_RZA9BC2F_21.1.18.5_AIR_SELF_TEST_ER_ENTRY
     # JC    from L07F0D                                                           Sbg07EF0_RZA9BC2F_21.1.18.5_AIR_SELF_TEST_ER_ENTRY
     # JLEU  from L07F19                                                           Sbg07F11_RZA9BC52_12.1.18.6_AIR_SELF_TEST_EO_ENTRY
     # JB    from L07F1F B3_FLAGTEMP_BG = 1                                        Sbg07F11_RZA9BC52_12.1.18.6_AIR_SELF_TEST_EO_ENTRY
     # JB    from L07F26 B2_FLAGTEMP_BG = 1                                        Sbg07F11_RZA9BC52_12.1.18.6_AIR_SELF_TEST_EO_ENTRY
07f2e: 20,63              sjmp  07f93            goto 07f93;

<snip>

Boosted - can you send me your comment lines from 07f19 to 07f2e ?? thanks.
I don't remember the wrong sym name being printed...

Thanks.

Everyone,
Dug up some of my old emails for reported V4 issues, and thanks to jsa for sending me some more.

So will start a 'v4 bugfix' run from now.

here are the lines requested from my CMT file.. Also, the DIR and CMT files are in a file a posted a page or so back. The BIN file I have been using is also in the zip file, I believe.

Just in case, here are the updated cmt, dir, and bin files.