Description:

Push a byte at a 0-based absolute 2-byte offset from the bottom of the stack onto the top of the stack.

Data (2 bytes):

poffset: offset from the bottom of the stack to the value being pushed.

Pseudo Code:

absStackRef = (unsigned short)program[pc + 1]
stack[sp] = stack[absStackRef]
sp = sp + 1
pc = pc + 3

Flags Affected:

D	H	C	Z	N

Possible Errors:

tvmStackOverflow	-	There is no more room on the stack to push the stack byte.
tvmStackError	-	The stack index is invalid.

Example:

pushsba 0x0001

Before stack   top 1 0x00 2 0xAA 3 0x32 4 0x02   bottom

After stack   top 1 0x32 2 0x00 3 0xAA 4 0x32 5 0x02   bottom