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N0ZMHF
180098H
 
 bit 0 
 for NBG0 
 N0ZMQT 
 180098H 
 bit 1 
 NBG0 
 N1ZMHF 
 180098H 
 bit 8 
 NBG1 
 N1ZMQT 
 180098H 
 bit 9 
 NBG1 

NxZMQT
NxZMHF
Horizontal reduction display 
 Restrictions 
 0 
 0 
 No 
 None 
 0 
 1 
 1/2 possible 
 Can only be set when the number of character colors is 16 or 256 
 1 
 0 
 1/4 
 Can only be set when the number of character colors is 16 
 1 
 1 
 1/4 
 Can only be set when the number of character colors is 16

● Line & vertical cell scroll control (NBG0, NBG1)

Line scroll interval bit : Line scroll select bit (N0LSS1, N0LSS0, N1LSS1, N1LSS0)

Specify the interval for reading the line scroll table data from the table. The interval varies depending on the interlace setting on the TV screen. 

N0LSS1,N0LSS0
18009AH
 
 bits 5,4 
 NBG0 
 N1LSS1, N1LSS0 
 18009AH 
 bit 13 , 12 
 For NBG1 

NxLSS1
NxLSS0
 
 Interlace Settings 
 Non-interlaced 
 Single-dense interlaced 
 Double dense interlace 
 0 
 0 
 line by line 
 Every 2 lines 
 Every line 
 0 
 1 
 Every 2 lines 
 Every 4 lines 
 Every 2 lines 
 1 
 0 
 every 4 lines 
 Every 8 lines 
 Every 4 lines 
 1 
 1 
 Every 8 lines 
 Every 16 lines 
 Every 8 lines
[Note] 0 or 1 is entered in x of the bit name.

Line zoom enable bit : Line zoom X enable bit (N1LZMX, N0LZMX)
Specify whether to perform scaling in line units in the horizontal direction. 

N0LZMX
18009AH
 bit 3 
 NBG0 
 N1LZMX 
 18009AH 
 bit 11 
 NBG1

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