The BBC and Master Computer Public Domain Library

BBE8 Pop Float from Stack (and point (&4A,&4B) to popped value)

Submitted by Steve Fewell

Description:

Store the Stack Pointer LSB in &4A and the Stack Pointer MSB in &4B.
Add 5 to the Stack Pointer LSB (&04) (add any carry resulting from this add to the
Stack Pointer MSB (&05). This will increase Stack size by 5 bytes (reclaiming the 5 bytes
occupied by the Floating-Point value that is now pointed to by (&4A,&4B).

Basically, this routine decreases occupied stack space by 5 bytes and stores old values of the
stack pointer in (&4A,&4B - the argp).

Disassembly for the Pop Float from Stack routine