Utility functions and programs.
Source: double-dabble.asm
Assembled: double-dabble.lst
Run test program from address 0x10.
The double-dabble function converts a hex byte into a 3 digit packed BCD spanning one and a half bytes.
The test program demonstrates the function by converting 243 into BCD using the ddabble function, before splitting out the nibbles and printing them individually as ASCII to the console.