Changes
Jump to navigation
Jump to search
no edit summary
* Opcode: '''0x9B'''
* Short name: '''HBYTE'''
* Long name: High Byte
==== Memory layout ====
{| border="1" cellspacing="1" cellpadding="3" style="border: 1px solid black; border-collapse: collapse;"
! width="40" | 0x9A
! width="40" | ''D / S''
! width="40" | ''DA''
! width="60" | ''SA'' or ''LB''
! width="60" | ''0'' or ''HB''
|}
==== Arguments ====
* '''const Bit[4]''' ''D'': Destination bank.
* '''const Bit[4]''' ''S'': Source bank.
* '''const UByte''' ''DA'': Destination address.
* '''const UByte''' ''SA'': Source address, ''or'' the lower byte of the given word, if source bank is zero.
* '''const UByte''' ''0'': Zero, ''or'' the higher byte of the given word, if source bank is zero.
==== Description ====
Retrieves the high byte of a two-byte word from the source bank and address, and places the byte value into the destination bank and address. If the source bank is zero, then the final two arguments are actually an explicit given two-byte word value, and the high byte value is retrieved from this word instead of from a memory address.
* Short name: '''HBYTE'''
* Long name: High Byte
==== Memory layout ====
{| border="1" cellspacing="1" cellpadding="3" style="border: 1px solid black; border-collapse: collapse;"
! width="40" | 0x9A
! width="40" | ''D / S''
! width="40" | ''DA''
! width="60" | ''SA'' or ''LB''
! width="60" | ''0'' or ''HB''
|}
==== Arguments ====
* '''const Bit[4]''' ''D'': Destination bank.
* '''const Bit[4]''' ''S'': Source bank.
* '''const UByte''' ''DA'': Destination address.
* '''const UByte''' ''SA'': Source address, ''or'' the lower byte of the given word, if source bank is zero.
* '''const UByte''' ''0'': Zero, ''or'' the higher byte of the given word, if source bank is zero.
==== Description ====
Retrieves the high byte of a two-byte word from the source bank and address, and places the byte value into the destination bank and address. If the source bank is zero, then the final two arguments are actually an explicit given two-byte word value, and the high byte value is retrieved from this word instead of from a memory address.
