參數(shù)資料
型號： NT6861U
廠商： Electronic Theatre Controls, Inc.
英文描述： 8-Bit Microcontroller for Monitor
中文描述： 8位微控制器的監(jiān)控
文件頁數(shù)： 8/44頁
文件大?。?/td> 455K
代理商： NT6861U
NT6861
8
3. RAM: 256 X 8 bits
256 X 8-bit SRAM is used for data memory and stack. The RAM addressing range is from $0080 to $017F. From $0100 to
$017F is used as the EDID data buffer when activating DDC1/2B mode transmission. The contents of RAM are undetermined
at power-up and are not affected by system reset. Software programmers can allocate stack area in the RAM by setting stack
pointer register S. Because the 6502 default stack pointer is $01FF, programmers must set register S to FFH when starting the
program, so the stack area will map $01FF - $0180 to $00FF - $0080.
as;
LDX
TXS
#$FF
RAM
Unused
$0000
$0080
$0100
$00FF
$A000
$FFFF
stack pointer
$FFFE
$FFFD
$FFFC
RST-L
RST-H
IRQ-L
IRQ-H
RESET vector
IRQ vector
$017F
$0180
EDID
(4/8/12/16/24K Bytes)
ROM
$0025
System Registers
Unused
$BFFF
相關(guān)PDF資料
PDF描述
NT6861 8-Bit Microcontroller for Monitor
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