Difference between revisions of "Peripheral 1 Register"

From SpecNext official Wiki
Jump to: navigation, search
Line 6: Line 6:
 
}}
 
}}
  
{|
+
{| class="wikitable"
 
! Bit !! Function
 
! Bit !! Function
 
|-
 
|-
Line 24: Line 24:
 
The codes for joystick modes are as follows:
 
The codes for joystick modes are as follows:
  
{|
+
{| class="wikitable"
 
! Code ! Effect
 
! Code ! Effect
 
|-
 
|-

Revision as of 01:53, 30 August 2017

Number $05
Readable Yes
Writable Yes
Short Description Sets joystick mode, video frequency, Scanlines and Scandoubler.


Bit Function
7-6 Joystick 1 mode
5-4 Joystick 0 mode
3 Reserved
2 Enable 60hz mode
1 Enable Scanlines
0 Enable Scandoubler

The codes for joystick modes are as follows:

Code ! Effect
00 Sinclair Joystick (Joystick 1 maps to keys 1,2,3,4,5; joystick 2 maps to keys 6,7,8,9,0)
01 Kempston Joystick (uses port Kempston Joystick ($xx1F / 31)). Only one joystick can be Kempston
10 Cursor Joystick (maps to keys 5,6,7,8,0). Only one joystick can be Cursor