Z90251 Datasheet, PDF (22/97 Pages) Zilog, Inc. – eZVision 200 Television Controllers with OSD

Z90255 ROM and Z90251 OTP
32 KB Television Controller with OSD
14
IR IRQ0(High Byte)
IR IRQ0(Low Byte)
HVSYNC IRQ1(High Byte)
HVSYNC IRQ1(Low Byte)
P62 IRQ2(High Byte)
P62 IRQ2(Low Byte)
P63 IRQ3(High Byte)
P63 IRQ3(Low Byte)
T0 IRQ4(High Byte)
T0 IRQ4(Low Byte)
T1 IRQ5(High Byte)
T1 IRQ5(Low Byte)
Reset Start Address
0000h
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
000Ch
On Chip Program Space
(32KB)
7FFFh
Figure 6 Program Memory Map
8000h
Reserved
Video
Refresh
RAM
FBFFh
FC00h
FFFFh
PS001301-0800