extern uint cpm_dpalloc(uint size, uint align);
extern int cpm_dpfree(uint offset);
extern uint cpm_dpalloc_fixed(uint offset, uint size, uint align);
extern uint cpm_dpalloc(uint size, uint align);
extern int cpm_dpfree(uint offset);
extern uint cpm_dpalloc_fixed(uint offset, uint size, uint align);