04-10-2019, 06:41 AM
They are other part of ram that are used to store procedure/function locations (0x4002 too).
my concern is more about that part :
Code:
as we reach 0x20023C by a JUMP embedded in a CALL, so A receive the first byte immediately after the CALL address
I don't know what kind of tool generates such code. 0x002007A1 is some kind of function offset table, accessing a range from 0x00200000 to 0x0020FFFF, giving a maximum number of function of 64 different offset (256/4).
On an other level, my disassembly tool was considering unconditioned jump or RET as a function ending. Here, I also have to consider CALL 0x20023C as a function exit.
my concern is more about that part :
Code:
Code:
0x20023C: POP XDE : 5A |
0x20023D: LD A,(XDE++1) : C5 E8 21 |
0x200240: LD XHL,0x002007A1 : 43 A1 07 20 00 |
0x200245: LD HL,(XHL + A) : D3 03 EC E0 23 |
0x20024A: JP T,XHL : B3 D8 | as we reach 0x20023C by a JUMP embedded in a CALL, so A receive the first byte immediately after the CALL address
Code:
0x2XXXX0 : CALL 0x20023C (4 bytes long instruction)
0x2XXXX4 : bb (1 byte value)I don't know what kind of tool generates such code. 0x002007A1 is some kind of function offset table, accessing a range from 0x00200000 to 0x0020FFFF, giving a maximum number of function of 64 different offset (256/4).
On an other level, my disassembly tool was considering unconditioned jump or RET as a function ending. Here, I also have to consider CALL 0x20023C as a function exit.