566
CHAPTER 26 ROM CORRECTION
26.6 Program Execution Flow
Figures 26-9 and 26-10 show the program transition diagrams when the ROM correction is used.
Figure 26-9. Program Transition Diagram (when One Place is Corrected)
(1) Branches to address F7FDH when fetch address matches correction address
(2) Branches to correction program
(3) Returns to internal ROM program
Remark
Area filled with diagonal lines : Internal expansion RAM
JUMP : Correction program start address
Correction place
Internal ROM
Internal ROM
JUMP
FFFFH
F7FFH
F7FDH
xxxxH
0000H
(1)
(2)
(3)
BR !JUMP
Correction program
Summary of Contents for PD78076
Page 2: ...2 MEMO ...
Page 12: ...12 MEMO ...
Page 48: ...48 MEMO ...
Page 64: ...64 MEMO ...
Page 82: ...82 MEMO ...
Page 100: ...100 MEMO ...
Page 130: ...130 MEMO ...
Page 180: ...180 MEMO ...
Page 222: ...222 MEMO ...
Page 248: ...248 MEMO ...
Page 288: ...288 MEMO ...
Page 308: ...308 MEMO ...
Page 364: ...364 MEMO ...
Page 494: ...494 MEMO ...
Page 526: ...526 MEMO ...
Page 544: ...544 MEMO ...
Page 558: ...558 MEMO ...
Page 580: ...580 MEMO ...
Page 596: ...596 MEMO ...
Page 598: ...598 MEMO ...
Page 626: ...626 MEMO ...