Malvineous: Document basic info and jumpers

2017-04-09T01:31:59Z

Document basic info and jumpers

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{{Device Infobox/Begin
| Bus type = ISA
| Bus width = 16-bit
| Bus speed = 8 MHz
| 8-bit ISA compatible =
| Manufacturer = Creative Labs
| Chipset = CT1746A
| Compatible with = [[Has compatibility::Sound Blaster]]
| Connectors = [[Has connector::Mic]], [[Has connector::Line in]], [[Has connector::Line out]] , [[Has connector::Speaker out]], [[Has connector::Gameport]]
| Requires -5VDC = No
| Requires -12VDC = Yes
| Config = [[Config method::Jumpers]], [[Config method::Software]]
}}
{{Device Infobox/Audio
| Model = CT1740
| Full duplex =
| Max sample rate =
| Channels = 2
| FM synth = OPL3
| Input/CD = [[Has CD audio input connector::SBCD]]
| Input/PC = [[Has PC speaker input connector::Dupont-2]]
| Factory memory = 0
| CD interface = [[Has CD interface::Matsushita MKE]]
}}
{{Device Infobox/End
| Driver
}}

The '''Sound Blaster 16 ASP''' is an enhancement to the original [[Creative Sound Blaster 16|SB16]] that introduces a signal processing chip. This was supposed to provide hardware compression and decompression of audio, however it proved to be a short-lived addition as later cards dropped this capability - presumably due to increasing CPU speeds and the fact that the majority of audio was synthesised in real-time (e.g. in games) rather than being pre-recorded.

== Additional photos ==

<gallery mode="packed">
Image:Creative Sound Blaster 16 ASP underside.jpg|Underside
</gallery>

== Jumpers ==

{|class="wikitable"
! I/O address !! IOS0 !! IOS1
|-
| 220h || Closed || Closed
|-
| 240h || Open || Closed
|-
| 260h || Closed || Open
|-
| 280h || Open || Open
|}

{|class="wikitable"
! IRQ !! IS0 !! IS1
|-
| 2 || Closed || Closed
|-
| 5 || Open || Closed
|-
| 7 || Closed || Open
|-
| 10 || Open || Open
|}

{|class="wikitable"
! Low DMA !! DAS0 !! DAS1
|-
| 0 || Closed || Closed
|-
| 1 || Open || Closed
|-
| 3 || Closed || Open
|-
| Disabled || Open || Open
|}

{|class="wikitable"
! High DMA !! DBS0 !! DBS1
|-
| 5 || Closed || Closed
|-
| 6 || Open || Closed
|-
| 7 || Closed || Open
|-
| Use low DMA || Open || Open
|}

{|class="wikitable"
! CSP chip !! IFSD !! APSD
|-
| Disabled || Closed || Closed
|-
| N/A || Open || Closed
|-
| N/A || Closed || Open
|-
| Enabled || Open || Open
|}

{|class="wikitable"
! MIDI I/O address !! MSEL
|-
| 330h || Closed
|-
| 300h || Open
|}

{|class="wikitable"
! MPU-401 emulation !! MFBEN
|-
| Enabled || Closed
|-
| Disabled || Open
|}

{|class="wikitable"
! Gameport !! JYEN
|-
| Enabled || Closed
|-
| Disabled || Open
|}

{|class="wikitable"
! CT17xx amplifier !! OPSL !! OPSR
|-
| Enabled || 2-3 || 2-3
|-
| Disabled || 1-2 || 1-2
|}

Presumably when the amplifier is enabled the output jack becomes a "speaker out", whereas a disabled amplifier will change the jack to a "line out" with the volume control nonfunctional, with presumably less noise on the output also.

{|class="wikitable"
! Unknown !! AUDIO_PWB (JP14)
|-
| Default || 6-7
|}

{|class="wikitable"
! Unknown !! RSPK_EN
|-
| Default || Closed
|-
| ? || Open
|}

=== Other connectors ===

* J3 is the [[Wave Blaster]] connector.

Creative Sound Blaster 16 ASP - Revision history

Malvineous: Document basic info and jumpers