Intel 8253 - Page 425

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4/17/98 6-25 Addressing Modes and Data Types

OR Rd, Rs Logical OR registers 2 3

OR Rd, [Rs] Logical OR register-indirect to register 2 4

OR [Rd], Rs Logical OR register to register-indirect 2 4

OR Rd, [Rs+offset8] Logical OR register-indirect with 8-bit offset to

OR [Rd+offset8], Rs Logical OR register to register-indirect with 8-

bit offset

OR Rd, [Rs+offset16] Logical OR register-indirect with 16-bit offset

to register

OR [Rd+offset16], Rs Logical OR register to register-indirect with

16-bit offset

OR Rd, [Rs+] Logical OR register-indirect with auto

increment to register

OR [Rd+], Rs Logical OR register-indirect with auto

increment to register

OR direct, Rs Logical OR register to memory 3 4

OR Rd, direct Logical OR memory to register 3 4

OR Rd, #data8 Logical OR 8-bit immediate data to register 3 3

OR Rd, #data16 Logical OR 16-bit immediate data to register 4 3

OR [Rd], #data8 Logical OR 8-bit immediate data to register-

indirect

OR [Rd], #data16 Logical OR 16-bit immediate data to register-

indirect

OR [Rd+], #data8 Logical OR 8-bit immediate data to register-

indirect with auto-increment

OR [Rd+], #data16 Logical OR 16-bit immediate data to register-

indirect with auto-increment

OR [Rd+offset8], #data8 Logical OR 8-bit immediate data to register-

indirect with 8-bit offset

OR [Rd+offset8], #data16 Logical OR 16-bit immediate data to register-

indirect with 8-bit offset

OR [Rd+offset16], #data8 Logical OR 8-bit immediate data to register-

indirect with 16-bit offset

OR [Rd+offset16], #data16 Logical OR 16-bit immediate data to register-

indirect with 16-bit offset

OR direct, #data8 Logical OR 8-bit immediate data to memory 4 4

Table 6.5

Mnemonic Description Bytes Clocks