Motorola M6800 manual

Page 25

MPU-25

1478

=

7x80 + 4x81 + 1x82

 

=

7x1

 

+ 4x8

+

1x64

 

= 7

+ 32

+

64

 

=

10310

 

 

 

 

6716

= 7x160

+

6x161

 

 

= 7x1

 

+

6x16

 

 

= 7

 

+

96

 

 

 

=

10310

 

 

 

 

As you probably have wondered by now, how do we represent these hex (base 16) numbers above 9? Here is the base 16 number compared with its equivalent base 10 number.

Base 10

Base 16

00

11

22

33

44

55

66

77

88

99

10A

11B

12C

13D

14E

15F

Image 25
Contents MPU-1 Introduction MPU-2 MPU-3 MPU-4 MPU-5 BIT N0 Function MPU-7 MPU-8 Data BUS EnabledbeREAD/WRITE R/W Valid Memory AddressvmaNON-MASKABLE Interruptnmi MPU-9BUS Available BA Address BUS AO/A15 THREE-STATE Control TSCINS ABAADC INXPage MPU-14 Summary of MPU Operation Reset Sequence IRQ Sequence RTI Execution NMI SequenceSWI Instruction Page Page Page Page Page Page Page Page