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List of pull-up resistors: Difference between revisions

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The SNES has several of what appear to be pull-up resistors:
The SNES has several of what appear to be [https://learn.sparkfun.com/tutorials/pull-up-resistors/all pull-up resistors]:


* R77, R78, R79, R80, R81, and R82, near the diode arrays
{| class="wikitable"
* R92, on the /[[IRQ]] line going into ito [[S-CPU]]
!colspan="2"|Resistors
* R97, on the EXPAND line going into the [[Cartridge Slot]]
|+
* R47, on the /[[MUTE]] line, near [[Q13]]
|'''Name'''
* R49, on the [[MUTE]] line, connected to [[Q13]]'s collector
|'''Notes'''
* R17, connected to the internal emitter/base of the blue Darlington pair
|+
* R19, connected in series with R18 to the external emitter of the blue Darlington pair
| R7
* R12, connected to the internal emitter/base of the green Darlington pair
| connected to the internal emitter/base of the [[Darlington triad|red Darlington pair]]
* R14, connected in series with R13 to the external emitter of the green Darlington pair
|+
* R7, connected to the internal emitter/base of the red Darlington pair
| R9
* R9, connected in series with R8 to the external emitter of the red Darlington pair
| connected in series with R8 to the external emitter of the red Darlington pair
* R21, connected in series with C8 to the video encoder (blue line)
|+
* R16, connected in series with C7 to the video encoder (green line)
| R77, R78, R79, R80, R81, and R82
* R11, connected in series with C6 to the video encoder (red line)
| near the [[diode array]]s
|+
| R92
| on the /[[IRQ]] line going into the [[S-CPU]]
|+
| R97
| on the EXPAND line going into the [[Cartridge Slot]]
|+
| R47
| on the /[[MUTE]] line, near [[Q13]]
|+
| R49
| on the [[MUTE]] line, connected to [[Q13]]'s collector
|+
| R17
| connected to the internal emitter/base of the [[Darlington triad|blue Darlington pair]]
|+
| R19
| connected in series with R18 to the external emitter of the blue Darlington pair
|+
| R12
| connected to the internal emitter/base of the [[Darlington triad|green Darlington pair]]
|+
| R14
| connected in series with R13 to the external emitter of the green Darlington pair
|+
| R21
| connected in series with C8 to the video encoder (blue line)
|+
| R16
| connected in series with C7 to the video encoder (green line)
|+
| R11
| connected in series with C6 to the video encoder (red line)
|}
 
=== See Also ===
* [[List of pull-down resistors]]
 
[[Category:SNES Hardware]]
[[Category:Lists]]

Latest revision as of 07:04, 18 July 2023

The SNES has several of what appear to be pull-up resistors:

Resistors
Name Notes
R7 connected to the internal emitter/base of the red Darlington pair
R9 connected in series with R8 to the external emitter of the red Darlington pair
R77, R78, R79, R80, R81, and R82 near the diode arrays
R92 on the /IRQ line going into the S-CPU
R97 on the EXPAND line going into the Cartridge Slot
R47 on the /MUTE line, near Q13
R49 on the MUTE line, connected to Q13's collector
R17 connected to the internal emitter/base of the blue Darlington pair
R19 connected in series with R18 to the external emitter of the blue Darlington pair
R12 connected to the internal emitter/base of the green Darlington pair
R14 connected in series with R13 to the external emitter of the green Darlington pair
R21 connected in series with C8 to the video encoder (blue line)
R16 connected in series with C7 to the video encoder (green line)
R11 connected in series with C6 to the video encoder (red line)

See Also

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