--- a/backend.h	Thu Oct 19 03:21:24 2017 -0700
+++ b/backend.h	Wed Dec 27 13:46:52 2017 -0800
@@ -131,6 +131,9 @@
 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc);
 void * get_native_pointer(uint32_t address, void ** mem_pointers, cpu_options * opts);
 uint16_t read_word(uint32_t address, void **mem_pointers, cpu_options *opts, void *context);
+void write_word(uint32_t address, uint16_t value, void **mem_pointers, cpu_options *opts, void *context);
+uint8_t read_byte(uint32_t address, void **mem_pointers, cpu_options *opts, void *context);
+void write_byte(uint32_t address, uint8_t value, void **mem_pointers, cpu_options *opts, void *context);
 memmap_chunk const *find_map_chunk(uint32_t address, cpu_options *opts, uint16_t flags, uint32_t *size_sum);
 uint32_t chunk_size(cpu_options *opts, memmap_chunk const *chunk);
 uint32_t ram_size(cpu_options *opts);