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Index

6502 microprocessor 33

6502 vectors 44

a/d conversion 11

absolute addressing 63

absolute indexed addressing 66

accumulator 37

active levels 221

address bus 19

address coordinates 179

address decoding 23

address modification 38

address pointer 69

address register 45

addressing modes 62

ALU 47

application note 1, 22

arithmetic instructions 56

array variable

storage 114

ASIA 11

assembler 77

bank swltching 6

benchmarks 33

binary 215

binary coded decimal 217

branch labels 79

bubble 21

bubble sorts 114

buffer registers 233

calling 84

chip enable 19

clearing registers 57

clock 20

code efficiency 218

comparisons 61

composite video 5

conditional assembly 89

control lines 19

current page 28

data bus 19

data transfers 37

decode matrix 47

decoders 231

demultiplexers 231

direct screen 173

direction register 197

double-byte working 101

encoders 232

execute phase 44

external interrupts 212

fetch phase 44

fixed-length records 144

fixed locations 82

flip flops 223

floating point array storage 139

floating point merge sorts 138

forward branching 85

four-byte addition 103

four-byte subtraction 105

Fred address 16

generations 2

glossary 249

hardware scrolling 185

hex op-code 54

hexadecimal 2 16

immediate addressing 62

implied addressing 62

indexed addressing 66

indexed indirect addressing 72

indexing 38

indirect addressing 68

indirect indexed addressing 70

indirection operators 97

instruction register 44

instruction set 235

instructions 52

integer array addition 108

internal interrupts 210

interrupt 8

interrupt enable register 204

interrupt flag register 202

interrupt mask 9

Jim 28

LEDs 227

logic gates 219

logic levels 218

lsi 2

macros 87

memory mapping 14

merge sorts 126

microprograms 45

mnemonic op-codes 78

moving objects 169

multi-byte counting 106

multi-colour MOBs 177

multifield sorts 143

multiplexers 232

nibble 173

one's complement 59

operand 52

operand variables 78

operating system calls 234

operation symbols 54

opto-isolator 228

page boundary 29

paging register 30

parameter passing 90

pixel 173

power pack 5

process status register 39

program counter 42

PROM programmers 7

pseudo-variables 82

read/write 20

refreshing 34

relative addressing 65

relays 227

remarks 80

reset fine 20

Reverse Polish 37

ROM chips 6

RS423 10

saving code 98

schmitt trigger 229

screen output 5

second processor 3

Sheila addresses 14

shift registers 232

sideways scrolling 185

Silicon Valley 2

software interrupt 48

sorting times 154

stack pointer 41

static RAM 35

storing code 80

string bubble sort 120

switch bounce 226

timers 205

tristate 225

TTL 2

two's complement 59

two dimensronal sorts 148

UHF 5

UHF modulator 5

up/down counting 57

user port 7

VDU codes 162

vectors 158

vertical scrolling 190

VIA 7

VIA registers 195

wired-OR 225

word length 3

zero-page add ressing 64


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