Unknown B_CALLs and their OS 2.41/BOOT 1.02 locations:
(289 to go):
Page 02h: 25
Page 03h: 23
Page 04h: 10
Page 05h: 26
Page 06h: 9
Page 07h: 4
Page 74h: 14
Page 75h: 16
Page 77h: 25
Page 78h: 14
Page 79h: 12
Page 7Bh: 94
Page 7Ch: 3
Page 7Dh: 1
Page 7Fh: 7
Page 6Fh: 6

51B2h: 02:4801h
51AFh: 02:4805h
518Bh: 02:4A45h
507Ah: 02:50A5h
5077h: 02:5A6Ch
4FFCh: 02:6AD3h
4FFFh: 02:6AE3h
4E85h: 02:6B52h
4E88h: 02:6B55h
4E8Bh: 02:6B64h
4E8Eh: 02:6B67h
4E91h: 02:6BA0h
4E94h: 02:6BADh
4E97h: 02:6C01h
4E9Dh: 02:6C3Eh
4EA0h: 02:6C84h
4EA3h: 02:6CA1h
4EA6h: 02:6CC2h
4EA9h: 02:6CD7h
4EACh: 02:6CF5h
4EAFh: 02:6D02h ;this is a weird one, first instruction screws up stack
4EB2h: 02:6D16h
50FEh: 02:6EC8h
5101h: 02:7016h
5137h: 02:78F1h
5212h: 03:4296h
4756h: 03:42BAh
520Fh: 03:4622h ;res 1,(iy+0Eh) \ ret
4FBDh: 03:46E0h
4FC0h: 03:4743h
5209h: 03:47AEh
5206h: 03:48DEh
5194h: 03:4A04h
4FC3h: 03:5365h ;sets up Window Settings context
503Eh: 03:569Fh
52BAh: 03:6240h
5230h: 03:62DDh
5296h: 03:62EFh
52B7h: 03:6451h
522Ah: 03:646Fh
52AEh: 03:6552h
52D2h: 03:6621h
52CFh: 03:6632h
523Fh: 03:66ABh
51A3h: 03:6DA0h
52C6h: 03:6DF1h
512Bh: 03:7247h
51D0h: 03:7C4Ah
4D92h: 04:40ADh
5038h: 04:4165h
50A4h: 04:44E0h
5305h: 04:5D77h
5110h: 04:5E5Ah
52C9h: 04:62CEh
510Dh: 04:688Bh
52D8h: 04:7734h
52D5h: 04:7799h
518Eh: 04:7F1Dh
51EBh: 05:42DDh
51E5h: 05:4652h
4FA5h: 05:46C1h
51D3h: 05:48D2h
51BBh: 05:493Ah
51BEh: 05:4943h
51E8h: 05:5182h
51E2h: 05:51F2h
5239h: 05:54C0h
51DFh: 05:54F7h
522Dh: 05:5520h
511Fh: 05:5606h ;_wputsEOL wrapper, investigate
511Ch: 05:5690h
523Ch: 05:56E0h
52C3h: 05:5A8Ch
5245h: 05:5AADh
51DCh: 05:5AEEh
517Ch: 05:5BD8h
52B4h: 05:64D4h
51EEh: 05:656Ah
51B5h: 05:6CB5h
5224h: 05:75F7h
5299h: 05:75F7h
52CCh: 05:75FCh
5227h: 05:763Fh
52C0h: 05:7644h
5116h: 06:4516h ;crazy parsing stuff
4CD8h: 06:4676h
5119h: 06:496Eh
50ADh: 06:56DFh
4D3Bh: 06:5EDCh
4FD5h: 06:6BE7h
51D9h: 06:6D70h
524Bh: 06:6E1Bh
520Ch: 06:6E21h
51ACh: 07:59DCh
50C2h: 07:5B4Eh
5080h: 07:79CEh ;might be existing var overwrite/skip/exit/rename/etc. menu
507Dh: 07:7A08h
50F2h: 74:4DD3h ;send USB data as either host or peripheral to supported device, DE bytes from HL (RAM pages 3/2 swapped in)
5308h: 74:5A41h ;send USB data as peripheral, sends 8 bytes from tempSwapArea?
530Bh: 74:5B84h ;screws with bits 0 and 3 of (9C75h)
530Eh: 74:5B92h ;bit 4,(81h)
5311h: 74:5B9Bh ;outputs eight bytes from 9C29h, returns vendor/product IDs and release number in HL/DE/BC
52E1h: 74:5B9Fh ;bit 4,(9C75h)
526Ch: 74:5CC8h ;checks 0,(9C0Ch), seems to get set regardless, and returns B=70h
526Fh: 74:5CDEh ;returns carry if B is not 70h, so probably directly related to 526Ch
5272h: 74:5CE8h ;C is input, returns carry if B is not 70h, so probably directly related to 526Ch/526Fh, does no USB port inputs/outputs
5275h: 74:5D2Dh ;same as 5272h minus a check from (9C0Ch)
527Bh: 74:5D34h ;pretty much just calls 5272h then makes a (9C0Ch) check
527Eh: 74:5DA6h ;returns carry if B is not 70h, then a (9C0Ch) check
5281h: 74:5DB7h ;returns carry if B is not 70h, resets 2,(9C0Ch)
5278h: 74:5DD2h ;returns carry if B is not 70h, outputs zeroes to ports 30h/31h, resets 1,(9C0Ch)
51FDh: 75:40DCh ;involves displaying cursor on large font option, stat plot stuff
4FA2h: 75:41E1h ;short and simple, no clue what it means
5203h: 75:4216h ;checks whether current context is...something, probably stat plot related
524Eh: 75:434Bh
4F9Fh: 75:4449h
51F4h: 75:4596h ;displays STAT PLOTS info
51F7h: 75:496Dh
5104h: 75:4994h
5107h: 75:49F7h
5251h: 75:4A6Ch
529Fh: 75:4D52h
52A2h: 75:4DCCh
52A5h: 75:55F3h
52A8h: 75:5672h
52ABh: 75:56E4h
52DBh: 75:5873h
5323h: 77:46BCh ;some sort of soft reset, deletes non-prog variables, recreates L1-L6, makes newly-written apps show up.
531Dh: 77:4774h ;displays app/program description intro settings screen thingy
5320h: 77:4B67h ;displays "RESET COMPLETE" and stuff like that
51A6h: 77:4EB1h ;ld hl,003Fh \ ld (ioPrompt),hl \ ret
51A9h: 77:4EB8h ;some parsing thing...
5113h: 77:4EFDh ;deletes equation 03h,2Dh,00h,00h...
4E5Eh: 77:4F05h ;might be some sort of string/number input
4E61h: 77:4F0Bh ;same as above, only set 1,(iy+9) instead of reset
5188h: 77:4F73h
4E64h: 77:4FA9h ;displays a number and waits for enter, I think
516Ah: 77:50CAh ;more math stuff than I care about
5170h: 77:518Ch ;too much crazy math
5143h: 77:5272h ;math stuff
5146h: 77:53B8h ;res 6,(iy+3Fh) \ ret
5149h: 77:53BDh ;set 6,(iy+3Fh) \ ret
5158h: 77:53C2h ;creates a temporary string and returns it in OP1, filled with math stuff
5152h: 77:53E9h ;subroutine of above
5164h: 77:5498h ;like 5158h
515Eh: 77:54C2h ;math stuff...
5179h: 77:550Ah
514Ch: 77:5542h ;math...
51D6h: 77:5CE0h ;I don't know, but might be mode screen related, cursor hook
5200h: 77:5E3Fh ;NZ if not a certain context, don't know what it is
51FAh: 77:605Ah ;definitely related to time setting context, funky
51C4h: 77:60EEh ;the actual cxMain routine to something
4A89h: 78:42E9h ;makes sure FPS1 and FPS2 are REAL, otherwise ErrDataType?
4B01h: 78:5A30h
4B04h: 78:5A33h ;same as 4B01h minus some flag changes
4B07h: 78:5A3Fh
521Eh: 78:5CE3h
4AF8h: 78:5E1Bh ;parsing stuff
4AFEh: 78:5F56h
4B0Ah: 78:6768h ;ERR:DATA TYPE if A is not one of a couple of values
5218h: 78:695Eh
521Bh: 78:6A07h
5215h: 78:6FBCh
50D7h: 78:700Ah ;uses parser hook with A=2, you pass the token to execute in A and either 1, 2, or 3 in C, which makes it look in different tables, sort of
5125h: 78:7D2Ah ;funky way of setting up homescreen context
51C1h: 78:7D70h
52DEh: 79:4217h ;subroutine of the "soft reset", does NOT make newly-written apps show up
5062h: 79:5144h ;might set up window context or something
505Fh: 79:5157h
45E2h: 79:5793h ;potentially calls menu hook with A=3
45E8h: 79:5B4Bh ;backs up some flags
5068h: 79:5B96h ;probably something to do with the table
5053h: 79:5C8Fh
5134h: 79:6D89h ;sets up new program/new group context, selectable somehow, probably leaves memory open
50C8h: 79:7270h ;may be group related, deselects all vars
50C5h: 79:729Eh ;creates group in OP1, you select the vars you want with VAT type byte (sometimes throws ERR:ARGUMENT, work on it)
5140h: 79:733Ch ;who knowws, but jumps to certain code based on A, 20h to 2Dh, ErrArgument otherwise
513Dh: 79:7348h ;same as above but skips a couple checks (which do scary math)
4C1Eh: 7B:55D5h
4C21h: 7B:55DBh
4C03h: 7B:55E0h
4D3Eh: 7B:55E1h
4C1Bh: 7B:568Eh
4C06h: 7B:58A1h ;inits a context and installs rawkey hook
4C2Ah: 7B:58BEh ;res 6,(iy+2Dh)
4FE1h: 7B:58C3h ;rawkey hook used by OS for above context
4C15h: 7B:58DAh
4C18h: 7B:58E5h
4C24h: 7B:58EAh
4C27h: 7B:58F6h
4C09h: 7B:5906h
4C0Ch: 7B:5914h
4C0Fh: 7B:5929h
4C2Dh: 7B:5934h
4C12h: 7B:593Dh
4C5Dh: 7B:598Dh
4CABh: 7B:5B17h
4CC3h: 7B:5C78h
4CE7h: 7B:5C78h
4CC0h: 7B:5C94h
4CE4h: 7B:5C94h
4CC6h: 7B:5CCCh
4CBAh: 7B:5CD9h
4CDEh: 7B:5CD9h
4CF0h: 7B:5D13h
4CD2h: 7B:5D31h
4CCFh: 7B:5DA3h
4CF3h: 7B:5E27h
4CB7h: 7B:5EA0h
4CCCh: 7B:5EA9h
4CC9h: 7B:5F44h
4CF6h: 7B:5F45h
4CF9h: 7B:6034h
4CD5h: 7B:603Ah
4CFCh: 7B:6119h
4CFFh: 7B:6165h
4D02h: 7B:61A6h
4D05h: 7B:6216h
4D08h: 7B:6255h
4D0Bh: 7B:625Ch
4D0Eh: 7B:6298h
4D11h: 7B:62B7h
4D14h: 7B:62F1h
4D17h: 7B:6339h
4D1Ah: 7B:635Dh
4D1Dh: 7B:6394h
4D20h: 7B:6461h
4D23h: 7B:6497h
4CEAh: 7B:6623h
4E2Eh: 7B:6643h
4D2Ch: 7B:6656h
4D59h: 7B:667Eh
4E1Ch: 7B:6B63h
4E22h: 7B:6B96h
4E19h: 7B:6BB6h
4E31h: 7B:6BE4h
4DDDh: 7B:6C0Ah
4E49h: 7B:6C0Dh
4DE6h: 7B:6C2Dh ;installs a cursor hook
4E25h: 7B:6C58h ;disables the cursor hook and does other crap
4E37h: 7B:6E24h
4E34h: 7B:6E45h
4DECh: 7B:6E84h
4D74h: 7B:6E8Ah
4DA1h: 7B:6E8Bh
4DEFh: 7B:6F96h
4E40h: 7B:722Fh
4E46h: 7B:7240h
4C57h: 7B:7357h
4C5Ah: 7B:735Bh
4D56h: 7B:7525h
4DA7h: 7B:753Dh
4DAAh: 7B:7549h
4DADh: 7B:7586h
4DB0h: 7B:75BAh
4DB3h: 7B:75CFh
4DB6h: 7B:75D3h
4DBCh: 7B:75F2h
4DB9h: 7B:75F5h
4DBFh: 7B:7620h
4D68h: 7B:7632h
4DA4h: 7B:7696h
4DCEh: 7B:7699h
4D50h: 7B:774Eh
4DC2h: 7B:7756h
4DC5h: 7B:7791h
4E58h: 7B:782Ch
4E5Bh: 7B:785Bh
4D4Ah: 7B:7871h
4D4Dh: 7B:7874h
4E55h: 7B:7888h
4D8Fh: 7B:79D5h
4F1Eh: 7C:619Ah ;simple enough, but no clue what the purpose is
4F27h: 7C:61B6h ;simple enough, but no clue what the purpose is
4F2Dh: 7C:6421h ;reads from certificate and sends/receives I/O data...Flash must be unlocked first
50CBh: 7D:6E14h ;does lots of things, including _DelVarSym and a funky crashing method of installing a new application
804Eh: 7F:4924h
8066h: 7F:4F82h
8069h: 7F:4EF0h
8081h: 7F:5D6Dh
8096h: 7F:4B1Ah
80AEh: 7F:53B3h
80B4h: 7F:4E52h
80E4h: 6F:4145h
8102h: 7F:4B4Dh
8105h: 6F:592Ah ;disables USB interrupts, lots of port outputs
8108h: 6F:5276h
810Bh: 6F:6297h ;set 1,(81h) and wait
810Eh: 6F:5933h ;like 8105h