Registers |
Registers are storage locations where 8 bit binary numbers are stored. The central processing unit in this simulator has four general purpose registers called AL, BL, CL and DL. These registers are interchangeable and can, with a few exceptions, be used for any purpose.
Newer central processing unit (CPU) chips have 16, 32 or even 64 bit registers. These work in the same way but more data can be moved in one step so there is a speed advantage.
Wider registers can store larger integer (whole) numbers. This simplifies many programming tasks. The other three registers SP, IP and SR are described later.
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