參數(shù)資料
型號: NT6861
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): 5/44頁
文件大?。?/td> 455K
代理商: NT6861
NT6861
5
Functional Descriptions
1. 6502 CPU
The 6502 is an 8-bit CPU that provides 56 instructions, decimal and binary arithmetic, thirteen addressing modes, true indexing
capability, programmable stack pointer with variable length stack, a wide selection of addressable memory, and interrupt input
options.
The CPU clock cycle is 4MHz (8MHz system clock divided by 2). Refer to 6502 data sheet for more details.
Accumulator A
Index Register Y
0
7
7
Index Register X
7
0
0
Stack Pointer SP
0
N
Status Register P
0
7
Carry
Zero
IRQ Disable
Decimal Mode
BRK Command
Overflow
Negative
7
Program Counter PCH
8
15
7
0
PCL
1 = TRUE
1 = Result ZERO
1 = DISABLE
1 = TRUE
1 = BRK
1 = TRUE
1 = NEG
V
B
D
I
Z
C
Figure 1. 6502 CPU Registers and Status Flags
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