|  | Routines | 
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| 
Used by the routine at C14D.
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| C12E | CALL $C13B | Obtain random x-delta (0 or -1) | ||
| C131 | LD (IX+$04),A | Set new x-delta to BLOB | ||
| C134 | CALL $C13B | Obtain random y-delta (0 or -1) | ||
| C137 | LD (IX+$05),A | Set new y-delta to BLOB | ||
| C13A | RET | |||
| C13B | CALL $A388 | Set A a pseudo random number between 0-1 | ||
| C13E | AND $01 | |||
| C140 | LD E,A | Obtain delta for the data buffer of BLOB deltas | ||
| C141 | LD D,$00 | |||
| C143 | LD HL,$C149 | |||
| C146 | ADD HL,DE | |||
| C147 | LD A,(HL) | |||
| C148 | RET | |||
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