Philips SAA1099
{{Short description|Sound generator integrated circuit}}
| align=right width=270px style="border:2px solid #8888aa; text-align: left;margin:8px" |
| colspan=4 style="background-color:#0066FF; text-align: center;"|Philips SAA1099 |
|---|
| colspan=4|Image:SAA1099 pinout.png |
| style="border:2px solid #8888aa; text-align: center;"|Pin
!style="border:2px solid #8888aa; text-align: center;"|Name !style="border:2px solid #8888aa; text-align: center;"|Dir !style="border:2px solid #8888aa; text-align: center;"|Description |
| 1
|/WR |32px |Write Enable |
| 2
|/CS |32px |Chip Select |
| 3
|A0 |32px |Control/Address Selec |
| 4
|OutR |32px |Sound Output Right |
| 5
|OutL |32px |Sound Output Left |
| 6
|Iref |32px |Reference Current Supply |
| 7
|/DTACK |32px |Data Transfer Acknowledge |
| 8
|CLK |32px |External Clock |
| 9
|GND |32px |Ground |
| 10
|D0 |32px |Data Bus 0 |
| 11
|D1 |32px |Data Bus 1 |
| 12
|D2 |32px |Data Bus 2 |
| 13
|D3 |32px |Data Bus 3 |
| 14
|D4 |32px |Data Bus 4 |
| 15
|D5 |32px |Data Bus 5 |
| 16
|D6 |32px |Data Bus 6 |
| 17
|D7 |32px |Data Bus 7 |
| 18
|Vcc |32px |Power +5V |
The Philips SAA1099 sound generator is a 6-voice sound chip used by some 1980s devices.{{Cite web |title=SAA1099 |url=https://www.worldofsam.org/products/saa1099 |access-date=2023-05-16 |website=World of SAM}}{{Citation |last=Hooper |first=Dave |title=stripwax/SAASound |date=2023-03-28 |url=https://github.com/stripwax/SAASound |access-date=2023-05-16}}{{Cite web |title=Philips SAA1099 Datasheet |url=https://datasheetspdf.com/datasheet/SAA1099.html |access-date=2023-05-16 |website=Datasheetspdf.com}}
It can produce several different waveforms by locking the volume envelope generator to the frequency generator, and also has a noise generator with 3 preset frequencies which can be locked to the frequency generator for greater range. It can output audio in fully independent stereo.
Uses
The following sound cards and computers used the SAA1099:
- Silicon Graphics IRIS Professional 4D and IRIS Power 4D machines, released in 1987 and 1988, used the SAA1099 on the IO2 and IO3 board for sound generation.{{Cite web |title=This Old SGI |url=http://www.sgistuff.net/mirrors/4dfaq/#appendixB |access-date=2023-05-16 |website=www.sgistuff.net}} Although this feature was almost never documented or used, the chip is present and usable if addressed directly.
- The Creative Music System (C/MS) by Creative Labs, released in 1987, and also marketed at RadioShack as the Game Blaster, released in 1988. These devices contain two SAA1099 chips, for twelve voices.
- The Creative Sound Blaster 1.0 card released in 1989 (and 1.5 and 2.0 as an optional addon), included the SAA1099 chips, in addition to the OPL2 chip (aka YM3812), which became much more popular.
- The British-made SAM Coupé computer released in 1989, with a single SAA1099 on the motherboard.{{Cite web |title=Philips SAA 1099 |url=https://velesoft.speccy.cz/saa1099-cz.htm |access-date=2023-05-16 |website=VELESOFT}}{{Cite web |last=Keprt |first=Aley |date=2012 |title=The software |url=http://www.keprt.cz/sam/saa/ |access-date=2023-05-16 |website=SimCoupé}}
- Various Gaelco arcade games and the JPM System 5 family used the SAA1099.{{Cite web |last=Motoschifo |title=Xor World (prototype) - MAME machine |url=http://adb.arcadeitalia.net/?mame=xorworld |access-date=2023-05-16 |website=adb.arcadeitalia.net |language=it}}{{Cite web |last=Motoschifo |title=Club Nudger (JPM) (SYSTEM5-SAA, set 1) - MAME machine |url=http://adb.arcadeitalia.net/?mame=j5clbnud |access-date=2023-05-16 |website=adb.arcadeitalia.net |language=it}}
References
{{Reflist}}
External links
- [http://velesoft.speccy.cz/saa1099-cz.htm Documentation]
- [http://www.keprt.cz/sam/saa/ SAA1099 emulator for Windows and a few demo tunes]
- [https://github.com/stripwax/SAASound SAA1099 emulation library]
- [http://www.sgistuff.net/mirrors/4dfaq/#appendixB The Old SGI audio]