Doubt with the STACK

[g6g6]

Hello. After a "push" instruction, the stack decrement 4. This "4" is  binary (4 bytes, 4 bits) ? what this represents?

[dedndave]

4 bytes
each single increment of any address is by bytes

[Gunther]

Hi g6g6,

4 bytes
each single increment of any address is by bytes

That's right. The stack is byte oriented.

Gunther

[Vortex]

Hi g6g6,

In 16-bit systems, the stack is modified by 2 bytes. In 64-bit systems, it's 8 bytes.

[hutch--]

 

Even worse, x86 hardware ONLY talks in BYTE or larger. BIT data is determined by a variety of techniques like AND masking or dedicated instructions like BT and similar.