4D systems Picaso MD1, User Manual

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µ V G A -PICASO- MD1
12
6.1.1 A dd User Bitmapped Character ( A )
Serial Syntax : cmd, group, numb, data1, data2, …….., dataN
4DGL Syntax : N/A
cmd : 41 hex , A ascii
group : selects the appropriate bitmap format
00 hex selects the 8x8 bitmap format
01 hex selects the 16x16 bitmap format
02 hex selects the 32x32 bitmap format
numb : bitmap character number to add to memory:
0 to 63 ( 00 h to 3F h), 64 characters of 8x8 format when group = 00 hex
0 to 15 ( 00 h to 0F h), 16 characters of 16x16 format when group = 01 hex
0 to 7 ( 00 h to 07 h), 8 characters of 32x32 format when group = 02 hex
data1 to dataN : number of data bytes that make up the composition and format of
the bitmapped character. The 8x8 bitmap composition is 1 byte wide (8bits)
by 8 bytes deep which makes N = 1x8 = 8. The 16x16 bitmap composition is
2 bytes wide (16bits) by 16 bytes deep which makes N = 2x16 = 32. The
32x32 bitmap composition is 4 bytes wide (32bits) by 32 bytes deep hence N
= 4x32 = 128.
Description : This command will add a user defined bitmapped character into the
internal memory. There are 3 different size bitmaps available, 8x8 format, 16x16
format and 32x32 format. The desired format is selected by specifying the appropriate
value in ‘
group’ .
Example1: 41 hex , 0, 01 hex , 18 hex , 24 hex , 42 hex , 81 hex , 81 hex , 42 hex , 24 hex ,
18 hex
This adds and saves user defined 8x8 bitmap as character number 1 into memory as
seen below.
b7 b6 b5 b4 b3 b2 b1 b0
data1 (hex = 18h)
data2 (hex = 24h)
data3 (hex = 42h)
data4 (hex = 81h)
data5 (hex = 81h)
data6 (hex = 42h)
data7 (hex = 24h)
data8 (hex = 18h)
Example of a 8x8 user defined bitmap