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VRAM size bit : VRAM size bit (VRAMSZ), bit 15
Specify the VRAM capacity used for the system. 

 VRAMSZ 
 VRAM capacity 
 0 
 4Mbit 
 1 
 8Mbit

Version number bit : Version number bit (VER3 ~ VER0), bits 3 ~ 0
∙ Indicates the version number of VDP2. Initially it is 0.

● H counter (read only)

H counter value bit : H counter bit (HCT9 to HCT0), bits 9 to 0

This signal is controlled by EXLTEN of the external signal enable register and represents the value of the latched H counter. 

 Graphic 
 Mode 
 HCT9 
HCT8
HCT7
HCT6
HCT5
HCT4
HCT3
HCT2
HCT1
HCT0
 Normal 
 H8 
 H7 
H6
H5
H4
H3
H2
H1
 
 H0 
 Disable 
 High Resolution 
 H9 
 H8 
H7
H6
H5
H4
H3
H2
H1
H0
 Dedicated Normal 
 Disable 
 H8 
H7
H6
H5
H4
H3
H2
H1
H0
 High Resolution 
 Disable 
 H9 
H8
H7
H6
H5
H4
H3
H2
H1

V counter (read only)

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