MCS BASIC-52 REFERENCE MANUAL

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Have fun hacking. Mast.

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Table of Contents


CHAPTER 1
Introduction

1.1 Introduction to MCS BASIC-52 1
1.2 Getting Started 2
1.3 Getting Started-What Happens After Reset 2
1.4 Definition of Terms 4
1.5 What's the difference between Version 1.0 and Version 1.1 9

CHAPTER 2
Description of Commands

2.1 RUN 13
2.2 CONT 14
2.3 LIST 15
2.4 LIST# 16
2.5 LlST@ 17
2.6 NEW 18
2.7 NULL 19

CHAPTER 3
Description of EPROM File Commands

3.1 RAM and ROM 21
3.2 XFER 22
3.3 PROG 23
3.4 PROG1 and PROG2 24
3.5 FPROG, FPROG1 and FPROG2 25
3.6 PROG3, PROG4, FPROG3, and FPROG4 (Version 1.1 only) 26
3.7 PROG5, PROG6, FPROG5, and FPROG6 (Version 1.1 only) 27

CHAPTER 4
Description of Statements

4.1 BAUD 28
4.2 CALL 29
4.3 CLEAR 30
4.4 CLEARS and CLEARI 31
4.5 CLOCK1 and CLOCK0 32
4.6 DATA-READ-RESTORE 33
4.7 DIM 35
4.8 DO-UNTIL 36
4.9 DO-WHILE 37
4.10 END 38
4.11 FOR-TO-STEP-NEXT 39
4.12 GOSUB-RETURN 41
4.13 GOTO 43
4.14 ON GOTO-ON GOSUB 44
4.15 IF-THEN-ELSE 45
4.16 INPUT 47
4.17 LET 49
4.18 ONERR 50
4.19 ONEX1 51
4.20 ONTIME 52
4.21 PRINT 54
4.22 PRINT# 57
4.23 PH0., PH1., PH0. #, PH1. # 58
4.24 PRlNT@, PHO.@, PH1.@ (Version 1.1 Only) 59
4.25 PUSH 60
4.26 POP 61
4.27 PWM 62
4.28 REM 63
4.29 RETI 64
4.30 STOP 65
4.31 STRING 66
4.32 UI1 AND UI0 67
4.33 UO1 and UO0 68
4.34 IDLE (Version 1.1 only) 69
4.35 RROM (Version 1.1 only) 70
4.36 LD@ and ST@ (Version 1.1 only) 71
4.37 PGM (Version 1.1 only) 72

CHAPTER 5
Description of Arithmetic/Logical Operators and Expressions

5.1 Dual Operand (DYADIC) Operators 74
5.2 Unary Operators 76
5.2.1 General Purpose 76
5.2.2 Log Functions 78
5.2.3 Trig Functions 78
5.3 Understanding Precedence of Operators 80
5.4 How Relational Expressions Work 81

CHAPTER 6
Description of String Operators

6.1 What are Strings? 82
6.2 The ASC Operator 83
6.3 The CHR Operator 85

CHAPTER 7
Special Operators

7.1 Special Function Operators 86
7.2 Examples of Manipulating Special Function Operators 94
7.3 System Control Values 95

CHAPTER 8
Error Messages, Bells, Whistles, and Anomalies

8.1 Error Messages
96
8.2 Disabling Control-C 100
8.3 Implementating "Fake DMA" 101
8.4 Run Trap Option (Version 1.1 only) 102
8.5 Anomalies 103

CHAPTER 9
Assembly Language Linkage

9.1 Overview 104
9.2 General Purpose Routines 106
9.3 Unary Operators 113
9.4 Special Operators 115
9.5 Dual Operand Operators 118
9.6 Added Link Routines to Version 1.1 122
9.7 Interrupts 129
9.8 I/O Resource Allocation 131

CHAPTER 10
System Configuration

10.1 Memory/Hardware Configuration 132
10.2 EPROM Programming Configuration/Timing 135
10.3 Serial Port Implementation 136

CHAPTER 11

Reset Options (Version 1.1 only) 145

CHAPTER 12

Command/Statement Extensions (Version 1.1 only) 153

CHAPTER 13

Mapping User Code Memory (Version 1.1 only) 159

APPENDIX A

1.1 Memory Usage (Version 1.0 and Version 1.1) 162
1.2 Using the PWM Statement 170
1.3 Baud Rates and Crystals 174
1.4 Quick Reference 176
1.5 Instruction Set Summary 183
1.6 Floating Point Format 184
1.7 Storage Allocation 185
1.8 Format of an MCS BASIC-52 program 188
1.9 Answers to a Few Questions 190
1.10 Pin-out List 192
1.11 8052AH Special Function Registers 193
1.12 References 199

APPENDIX B

Instruction Set Summary 200

INDEX

INDEX 213

 

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