What do mem8 and imm8 mean?

[Milky]

http://www.c-jump.com/CIS77/reference/Instructions_by_Opcode.html

[n_scott_pearson]

Here are the basics:

• mem8 - a reference (pointer) to an 8-bit (byte) value.
• imm8 - an immediate (i.e. included right in the instruction and thus invariable) 8-bit (byte) value.
• reg8 - means an 8-bit register (AH, AL, etc.).

Obviously, you will also see 16-bit (mem16, imm16, reg16), 32-bit and 64-bit versions of these types of operands.

Hope this helps,

...S