*** M E M O R U M ***

What makes the advanced challenge harder is that p and q are 17-bit, not 16-bit. You can represent the two extra state bits however you choose, provided Programming rule 1 is not broken. Remember the aim of the game is to write the smallest and fastest code possible.

We are now about halfway through the time allowed for the code challenges. Both of them can be solved without using the stack (not permitted) so that the code could run on a Z80 system with no RAM at all. If you have completed the basic challenge, you should find the solution to be rather pleasing a...

Updates: * I think we should have an Advanced winner as well as a Basic winner, so now you have two chances to be a victor! * In post 2, I have listed the first 16 PRNs for both challenges. * In post 3, I have added the word entirely to Programming rule 2. Your routine must not contain self-modifyin...

Andy, those results are correct.

Absolute jumps can be used in the Advanced challenge, if needed. (You will not need them in the Basic challenge.) Programming rule 4 ("Your routine must run correctly if placed anywhere in memory") means you cannot choose a specific starting address. Any type of JP to a label within the ro...

Any code that will run on a Z80A CPU is permitted, including "undocumented" instructions.

New programming rules added to post 2 above.

Self-modifying code is not allowed in the basic challenge code, which should be able to run in ROM.

reserved

Contest Rules 1. Please do NOT post any of the following either here or on the Memotech Facebook page: * Your source code * Tips or spoilers * The number of bytes in your solution 2. Send your source code to me by a private message here or on Facebook (click on my name) any time before the end of F...