// // Official Kernal routine, described in: // // - [RG64] C64 Programmer's Reference Guide - page 287/288 // - [CM64] Compute's Mapping the Commodore 64 - page 240 // // CPU registers that has to be preserved (see [RG64]): .A // MEMBOT: bcc membot_set ldx MEMSTR+0 ldy MEMSTR+1 rts membot_set: stx MEMSTR+0 stx MEMSTR+1 rts