11. The width of the address bus determines the amount of memory a system can address. 12. The backplane served as the address bus and the ribbon cable as the data bus. 13. Earlier models of DVK series were based on K1801VM1 or K1801VM2 microprocessors with 16 bit address bus . 14. ARM9 cores have separate data and address bus signals, which chip designers use in various ways. 15. The address bus was always active so the VMA ( valid-memory address ) output was eliminated. 16. The 6502 is a little-endian 8-bit processor with a 16-bit address bus . 17. In the later models, the KM1801VM3 microprocessor ( with 22 bit extended address bus ) was used. 18. This was done in response to community requests to address buses that were double parking during their recovery times. 19. This was a 68000 with an 8-bit data bus and a smaller ( 20 bit ) address bus . 20. During refresh the contents of the Interrupt register I are sent out on the upper half of the address bus .
