Return to previous page ｜ Return to menu ｜ Go to next page

Horizontal resolution bit : Horizontal resolution bit (HRESO2 to HRESO0), bits 2 to 0
Specifies the horizontal resolution when displaying a picture on the TV screen. 

 320 pixels  
 352 pixels  
 640 pixels  
 704 pixels  
 320 pixels  
 352 pixels  
 640 pixels  
 704 pixels  
HRESO2
HRESO1
HRESO0 
 Horizontal resolution 
 Graphic mode 
 Displayable monitor 
0
0
0
 
 Normal 
 Graphic A 
 NTSC system or 
 PAL system TV 
0
0
1
 
 Normal 
 Graphic B 
0
1
0
 
 High-Res 
 Graphic A 
0
1
1
 
 High-Res 
 Graphic B 
1
0
0
 
 Special 
 Graphic A 
 31 kHz monitor 
1
0
1
 
 Dedicated normal 
 Graphic B 
 High-definition monitor 
1
1
0
 
 High-resolution 
 Graphic A 
 31 kHz monitor 
1
1
1
 
 High resolution 
 Graphic B 
 High-definition monitor

● External signal enable (Read enabled)

External latch enable bit : External latch enable bit (EXLTEN), bit 9
Specify the condition for latching the HV counter value in the HV counter register. 

 EXLTEN 
 Articles 
 0 
 Latch when external signal enable register is read 
 1 
 Latch by external signal

External synchronization enable bit : EXSYNC enable bit (EXSYEN), bit 8
Controls the input of the external sync signal to the internal sync circuit. 

 EXSYEN 
 Processing 
 0 
 Do not input external sync signal 
 1 
 Input an external sync signal to synchronize the TV screen display with the outside

Return to previous page ｜ Return to menu ｜ Go to next page