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Old 03 February 2011, 15:07   #7
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 45
Posts: 23,657
Quote:
Originally Posted by pmc View Post
According to the manual:

addq.l #x,An = 8 clock cycles
addq.w #x,An = 4 clock cycles
It is wrong. (compare it with SUBAQ in same page). 68000/010 can't execute one instruction with two ALU operations in 4 cycles (ALU is only 16-bit and all address register operations are always full 32-bit)
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