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Intel 8253 - Page 497

Intel 8253
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4/17/98 6-97 Addressing Modes and Data Types
FJMP Far Jump Absolute
Syntax: FJMP addr24
Operation: (PC.23-0) <-- addr24
(PC.
0) <-- 0
Description: Causes an unconditional branch to the absolute memory location specified by the
second operand, anywhere in the 16 megabytes XA address space.
Note: The target address must be word aligned as JMP always forces PC to an even address.
Note: if the XA is in page 0 mode, only 16-bits of the address will be used.
Size: None
Flags Updated: none
Bytes:4
Clocks:6
Encoding:
byte 3: lower 8 bits of address (bits 7-0)
byte 4: upper 8 bits of address (bits 23-16)
1 1 0 1 0 1 0 0 address: middle 8 bits (bits 15-8)

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