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VDP1 User's Manual/Chapter 6 Command Table

■6.6 CMDSIZE (character size)

CMDSIZE specifies the size of the defined character pattern. CMDSIZE is valid for texture drawing commands. Specify in 16 bits at the start address of the command table +0AH. Set unused bits to 0.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 CMDSIZE +0AH 0 0 Character size X/8 Character size Y

Specify the size of the character pattern in multiples of 8 for width (X) and 1 pixel for height (Y).

The width is 5 bits, and you can specify a value from 1 to 63. Since the unit is 8 pixels, the actual size can be specified from 8 to 504 pixels. Do not specify 0.

The height is 8 bits, and you can specify a value from 1 to 255. Do not specify 0.
Figure 6.19 CMDSIZE
Horizontal size: 8 to 504 pixels　 ├──────────────┤ ┏━━━━━━━━━━━━━━┓┬ ┃ ┃│ ┃ ┃│ ┃ ┃│Vertical size: 1 to 255 pixels ┃ ┃│ ┃ ┃│ ┃ ┃│ ┗━━━━━━━━━━━━━━┛┴

The relationship between the values defined in the command table and the number of drawing pixels is as follows.

Table 6.5 Relationship between setting values and drawing pixels

Lateral (X) direction		Vertical (Y) direction
command table Setting value to	actually drawn number of pixels	command table Setting value to	actually drawn number of pixels
0	Setting prohibited	0	Setting prohibited
1	8	1	1
2	16	2	2
:	:	:	:
63	504	255	255

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	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
CMDSIZE +0AH	0	0	Character size X/8						Character size Y