Drawing pixels: TWOS

       Name: TWOS                                                    [Show more]
       Type: Variable
   Category: Drawing pixels
    Summary: Ready-made bytes for drawing one-pixel dots in the space view
    Context: See this variable in context in the source code
 References: This variable is used as follows:
             * LOIN (Part 2 of 7) uses TWOS
             * LOIN (Part 5 of 7) uses TWOS


 This table contains ready-made pixel bytes for drawing a one-pixel dot in the
 high-resolution screen mode on the Apple II.

 The pixels in bits 0 to 6 appear in that order on-screen (so bit 0 is on the
 left). The comments below show how the bits map into the screen, with seven
 pixels per byte.

 See the LOIN routine for details.


.TWOS

 EQUB %00000001         ; x000000
 EQUB %00000010         ; 0x00000
 EQUB %00000100         ; 00x0000
 EQUB %00001000         ; 000x000
 EQUB %00010000         ; 0000x00
 EQUB %00100000         ; 00000x0
 EQUB %01000000         ; 000000x