Routines |
Prev: 3501 | Up: Map | Next: 350B |
The address of this routine is found in the table of addresses. It is called via the calculator literal +36 by the routines at NEXT_LOOP, PRINT_FP, int, get_argt and atn.
This subroutine returns a 'last value' of one if the present 'last value' is less than zero and zero otherwise. It is also used by other subroutines to 'jump on minus'.
|
||||||||
less_0 | 3506 | XOR A | Clear the A register. | |||||
This entry point is used by the routine at greater_0 with A=+FF.
|
||||||||
SIGN_TO_C | 3507 | INC HL | Point to the sign byte. | |||||
3508 | XOR (HL) | The carry is reset for a positive number and set for a negative number; when entered from greater_0 the opposite sign goes to the carry. | ||||||
3509 | DEC HL | |||||||
350A | RLCA | |||||||
This routine continues into FP_0_1.
|
Prev: 3501 | Up: Map | Next: 350B |