start-microcode showvoices \ continuously move sprites 0-63 to match amplitude of the \ 64 sound voices. : main d# 0 begin dup d# 4 * VOICES + d# 2 + c@ \ read voice amplitude invert over d# 4 * RAM_SPR + d# 2 + c! \ write as sprite Y coord 1- h# 3f and \ next voice again ; end-microcode