SOUNDCHIP SFG-01 MBIOS
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SFG01 Music BIOS
Reference Manual v1.0 December 26, 1984 Nippon Gakki Co., Software Development
Introduction
This reference manual is intended to explain the utilization of the "SFG-01" Control Program version 1.0" which resides within the internal 16Kbyte ROM of the "SFG-01".
TABLE OF CONTENTS
Chapter I Outline
Contents
- 1 1-1 Program Configuration
- 2 1-2 Design Concept
- 3 1-3 Hardware Configuration
- 4 1-4 Interface with MSX BASIC
- 5 1-5 Versions
- 6 2-1 Keyboard, Queue, Musical Instrument, Event
- 7 2-2 Major parameters by which the FM sound generator IC creates sounds
- 8 2-3 Music Keyboard
- 9 2-4 Creation of Automatic Rhythm Patterns
- 10 2-5 CSMVocal Synthesis
- 11 2-6 Voice Library
- 12 2-7 Recording, Playback
- 13 3-1 User Interface
- 14 3-2 Memory Management
- 15 3-3 Supervisor Call
- 16 3-4 IRQ Processing
- 17 3-5 TRAP
- 18 3-6 Direct Commands by Asscessing MIDB,1DB
- 19 4-1 I-Call
- 20 4-2 R-Call
- 21 4-3 K-Call
- 22 4-4 P-Call
- 23 4-5 S-Call
- 24 4-6 M-Call
- 25 4-7 TRAP
- 26 4-8 MIDB
- 27 4-9 IDB
- 28 4-10 Voice Data
- 29 4-11 UVL
- 30 4-12 Setting up information
- 31 5-1 Program Example
- 32 5-2 Supplementary explanation for recording and playback programming
- 33 5-3 supplementary explanation for autorhythm generator
- 34 5-4 Supplementary information for CMT handling
- 35 5-5 M-Monitor usage
- 36 5-3 Problems and Solutions
1-1 Program Configuration
1-2 Design Concept
The MBIOS was designed with the following main concepts in mind.
First, MBIOS users should not have to worry directly about the hardware. The controls of the built-in FM sound chip, and that of midi interface, are all carried out by the MBIOS, freeing the user from this task.
Second, the concept of a virtual instrument should be defined in the user's program space. By instrument, we mean the processing system for real-time key-on/key-off requests (events). MBIOS defines the instrument by using an IDB(Instrument Definition Block) that is linked to the built-in FM sound generator IC or MIDI interface as the actual instrumental outputs. Thus (considering event data being input to the instrument), once the instrument is defined, the user can control the FM sound generator IC by manipulating only the event data.
Third, the slot management of the MSX system should be left up to user. This enables a multiple number of slots to be used together with the M-BIOS. In other words, the M-B1OS does not address the slots by itself (with some exceptions). This enables the user to call out the IRQ processing module of the MBIOS by switching the slot to SFG-0 I , even when the interrupt is received at the user's slot.
Fourth, there may be parallel prcessing by service calls. That is, the processes of Keyboard Scanning and Instrument Performance (PLAY), as well as the real-time processes such as event buffer handling for automatic reformance, can run simultaneously by appropriately issuing MBIOS calls in the user's main program or in his interrupt routines.
1-3 Hardware Configuration
1-4 Interface with MSX BASIC
1-5 Versions
Chapter II Basic Functions
2-1 Keyboard, Queue, Musical Instrument, Event
2-2 Major parameters by which the FM sound generator IC creates sounds
2-3 Music Keyboard
2-4 Creation of Automatic Rhythm Patterns
2-5 CSMVocal Synthesis
2-6 Voice Library
2-7 Recording, Playback
Chapter III M-BIOS Interface
3-1 User Interface
3-2 Memory Management
3-3 Supervisor Call
3-4 IRQ Processing
3-5 TRAP
3-6 Direct Commands by Asscessing MIDB,1DB
�Chapter IV M-BIOS Syntax
4-1 I-Call
4-2 R-Call
4-3 K-Call
4-4 P-Call
4-5 S-Call
4-6 M-Call
4-7 TRAP
4-8 MIDB
4-9 IDB
4-10 Voice Data
4-11 UVL
4-12 Setting up information
Chapter Writing Programs
