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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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GXM датащи(PDF) 204 Page - National Semiconductor (TI) |
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GXM датащи(HTML) 204 Page - National Semiconductor (TI) |
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204 / 244 page  www.national.com 204 Revision 3.1 Instruction Set (Continued) 9.1.2.2 d Field (Operand Direction) When used, the d field (bit 1) determines which operand is taken as the source operand and which operand is taken as the destination. See Table 9-5. 9.1.2.3 s Field (Immediate Data Field Size) When used, the s field (bit 1) determines the size of the immediate data field. If the s bit is set, the immediate field of the opcode is 8 bits wide and is sign-extended to match the operand size of the opcode. See Table 9-6. 9.1.2.4 eee Field (MOV-Instruction Register Selection) The eee field (bits [5:3]) is used to select the control, debug and test registers in the MOV instructions. The type of register and base registers selected by the eee field are listed in Table 9-7. The values shown in Table 9-7 are the only valid encodings for the eee bits. Table 9-5. d Field Encoding d Field Direction of Operation Source Operand Destination Operand 0 Register-to-Register or Register-to-Memory reg mod r/m or mod ss-index- base 1 Register-to-Register or Memory-to-Register mod r/m or mod ss-index- base reg Table 9-6. s Field Encoding s Field Immediate Field Size 8-Bit Operand Size 16-Bit Operand Size 32-Bit Operand Size 0 (or not present) 8bits 16bits 32bits 18 bits 8 bits (sign-extended) 8bits (sign-extended) Table 9-7. eee Field Encoding eee Field Register Type Base Register 000 Control Register CR0 010 Control Register CR2 011 Control Register CR3 100 Control Register CR4 000 Debug Register DR0 001 Debug Register DR1 010 Debug Register DR2 011 Debug Register DR3 110 Debug Register DR6 111 Debug Register DR7 011 Test Register TR3 100 Test Register TR4 101 Test Register TR5 110 Test Register TR6 111 Test Register TR7 |
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