Olympus OEP-3 - Page 115

4-7
OEP-3 V1 (UC)
Flowchart of CPU
START
Initialize
SWD_VD
IRQ0
MAIN:
VF judgment and
setting of counter for CPU_VD creation
SWD_HD
IRQ1
VF judgment and
VBLANK generation
PRNT_DREQ
IRQ2
Setting of print data output
IMCAP
IRQ4
Execution of highest-speed image fetch function
DRAM controller setting
SCI
RXI
Command storage and
command flag setting
Each DMA flag
Command execution
Command flag
Write of color adjustment data
Color adjustment
flag
VBLANK
VBLANK
Write of caption data
Caption flag VBLANK
VBLANK