MAMEWorld Forums - Programming - (Vectrex) Assembler prob...

A long time ago I downloaded some sample vectrex source code and adapted one particular program to play a little tune I transposed from guitar...

Anyway, I could never get the program to repeat the main procedure (even in the sample before I started messing with it). Here is a snippet:

Code:

main_loop:
                JSR     DP_to_C8                ; DP to RAM
                LDU     #yankee                 ; get some music, here yankee
                JSR     Init_Music_chk          ; and init new notes
                JSR     Wait_Recal              ; Vectrex BIOS recalibration
                JSR     Do_Sound                ; ROM function that does the
                                                ; sound playing
                BRA     main_loop               ; and repeat forever

It is as if the last line isn't doing anything. I'm not great with assembler so any help would be appreciated. Attached is the complete code and assembly 'log'.

Oh, and I'm using the AS09 assembler (http://www.kingswood-consulting.co.uk/assemblers/), but v1.32.

Edit: btw close your ears if you happen to compile/run this. It sounds bloody awful...

Edited by Minwah (06/23/09 10:28 PM)