Spectrum ROM | Routines |
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The address of this routine is found in the table of addresses. It is called indirectly via fp_calc_2.
This subroutine performs the binary operation 'X AND Y' and returns X if Y is non-zero and the value zero otherwise.
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no_and_no | 13604 | EX DE,HL | Point HL at Y, DE at X. | ||||
13605 | CALL TEST_ZERO | Test whether Y is zero. | |||||
13608 | EX DE,HL | Swap the pointers back. | |||||
13609 | RET NC | Return with X as the 'last value' if Y was non-zero. | |||||
13610 | AND A | Reset the carry flag and jump back to set the 'last value' to zero. | |||||
13611 | JR FP_0_1 |
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