IBM 32x, W2H, 31x manual IBM Mode, Input/output device commands

11-9-2005 Input/output device commands

Table A-1. User character definition: Logic Controls Emulation

Mode

					Bit
Byte #	0	1	2	3		4	5	6	7
1	P8	P7	P6	P5		P4	P3	P2	P1
2	P16	P15	P14	P13		P12	P11	P10	P9
3	P24	P23	P22	P21		P20	P19	P18	P17
4	P32	P31	P30	P29		P28	P27	P26	P25
5	-	-	-	-		-	P35	P34	P33

*These character definitions are maintained for application compatibility with displays with 5x8 character boxes.

←– –– –5 pixels wide – – – –→
P1	P2	P3	P4	P5	↑
P6	P7	P8	P9	P10
P11	P12	P13	P14	P15
P16	P17	P18	P19	P20	7 pixels high
P21	P22	P23	P24	P25
P26	P27	P28	P29	P30
P31	P32	P33	P34	P35	↓

IBM Mode

IBM Mode allows nine user defined characters to be defined. See Table A-2for defined characters:

Table A-2. User character definition: IBM Mode

1.X'15'

2.X'16'

3.X'17'

4.X'18'

5.X'19'

6.X'1A'

7.X'1C'

8.X'1D'

9.X'1E'

The byte that follows the command byte represents an address betweenX'15' and X'1A', or between X'1C' and X'1E' in the currently selected character set. This byte is followed by eight bytes, which define the actual bit patterns of the user-defined character.

Table A-3 on page A-4shows the format of these eight bytes.

Note: A hyphen character in the table indicates a do-not-care bit. The other values relate to the character pixel positions shown in the diagram following the table. A value of 1 in the appropriate place in the data stream indicates that the related pixel position is ON; a 0 indicates that it is OFF.

Appendix A. Input/output device commands A-3