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| 型号： | MA17502 |
| 厂商： | Dynex Semiconductor Ltd. |
| 英文描述： | Radiation Hard MIL-STD-1750A Control Unit |
| 中文描述： | 辐射硬的MIL - STD - 1750A控制单元 |
| 文件页数： | 10/30页 |
| 文件大小： | 272K |
| 代理商： | MA17502 |
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MA17502
10/30
5.2 ADDRESSING MODES
The MAS281 chip set supports the eight addressing
modes specified in MIL-STD-1750A. These addressing
modes are shown in Figure 5 and are defined below.
5.2.1 Register Direct (R)
The register specified by the instruction (RB) contains
the required operand.
5.2.2 Memory Direct (D,DX)
Memory Direct (without indexing) is an addressing
mode in which the instruction contains the memory address
(A) of the required operand. ln Memory Direct (indexed),
the memory address of the required operand is specified by
the sum of the contents of an index register (RX) and the
instruction address field (A). Registers R1 through R15
may be specified for indexing.
5.2.3 Memory Indirect (I,IX)
Memory Indirect (without indexing) is an addressing
mode in which the memory address (A) specified by the
instruction contains the address of the required operand. In
Memory Indirect (pre-indexed), the sum of the contents of a
specified index register (RX) and the instruction address
field (A) is the address of the address of the required
operand. Registers R1 through R15 may be specified for
indexing.
5.2.4 Immediate Long (IM)
There are two formats that implement Immediate Long
Addressing; one allows indexing and one does not. For the
indexable format, if the specified index register (RX) is not
equal to zero, the contents of RX are added to the
immediate field to form the required operand, otherwise,
the immediate field contains the required operand .
5.2.5 Immediate Short (IS)
In this mode the required 4-bit operand is contained
within the 16-bit instruction. The Immediate Short
addressing mode accommodates two formats; one which
interprets the contents of the immediate field as positive
data and the other which interprets the contents of the
immediate field as negative data.
5.2.6 Immediate Short Positive (ISP)
The immediate operand is treated as a positive integer
between 1 and 16.
5.2.7 Immediate Short Negative (ISN)
The immediate operand is treated as a negative integer
between 1 and 16. Its internal form is a two’s complement,
sign-extended 16-bit number.
5.2.8 Instruction Counter Relative (ICR)
This addressing mode is used for 16-bit branch
instructions. The contents of the instruction counter minus
two (the address of the current instruction) is added to the
sign-extended 8-bit displacement field (D) within the
instruction. This sum then points to the memory address to
which control may be transferred if a branch is to be taken.
Figure 4: Data Formats
5.2.9 Base Relative (B)
There are two formats which implement Base Relative
Addressing; one allows indexing and one does not. For the non-
indexable form the contents of the instruction specified base
register (BR = BR' + 12) is added to the 8-bit displacement field
(DU) of the 16-bit instruction. For the indexable form, the sum of the
contents of a specified index register (RX) and a specified base
register (BR = BR' + 12) is the address of the required operand.
Registers R1 through R15 may be specified for indexing and the
base register may be R12 through R15.
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相关代理商/技术参数 |
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| MA17503 | 制造商:DYNEX 制造商全称:Dynex Semiconductor 功能描述:Radiation Hard MIL-STD-1750A Interrupt Unit |
| MA1751E12B1+6-FSR-EM | 制造商:Mechatronics Fan Group 功能描述: |
| MA1751E12B-FSR | 功能描述:FAN AXIAL 172X150X51MM 12VDC 制造商:mechatronics fan group 系列:MA1751 零件状态:有效 电压 - 额定:12VDC 大小/尺寸:矩形/圆形 - 172mm 长 x 150mm 高 宽度:50.80mm 气流:269.2 CFM(7.62m3/min) 静压力:0.670 英寸水柱（166.9 Pa） 轴承类型:滚珠 风扇类型:管轴式 特性:- 噪声:61 dB（A） 功率（W）:- RPM:3150 RPM 端接:2 引线 侵入防护:- 工作温度:- 认可:UL 额定电流:2.2A 电压范围:- 材料 - 框架:铝 材料 - 刀片:聚对苯二甲酸丁二酯（PBT） 重量:1.6 磅（725.7g） 标准包装:20 |
| MA1751E24B-FSR | 功能描述:AXIAL FAN 172X150X51MM 24VDC 制造商:mechatronics fan group 系列:* 零件状态:在售 标准包装:1 |
| MA1751E48B2-FSR-TTL | 功能描述:AXIAL FAN 172X150X51MM 48VDC LOC 制造商:mechatronics fan group 系列:* 零件状态:在售 标准包装:1 |
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