IBM 4400 Clearing the Evfu Memory, Series Evfu Series Evfu Codes PI Line Disabled or Not Used

Chapter 9 P-Series EVFU

Table 78. P-Series EVFU Codes - PI Line Disabled or Not Used

	ASCII						Data Bits
Hex	Dec.	Code		8	7	6	5	4	3	2	1	Channel
10	16	DLE		0	0	0	1	0	0	0	0	1 (TOF)
11	17	DC1		0	0	0	1	0	0	0	1	2
12	18	DC2		0	0	0	1	0	0	1	0	3
13	19	DC3		0	0	0	1	0	0	1	1	4
14	20	DC4		0	0	0	1	0	1	0	0	5
15	21	NAK		0	0	0	1	0	1	0	1	6
16	22	SYN		0	0	0	1	0	1	1	0	7
17	23	ETB		0	0	0	1	0	1	1	1	8
18	24	CAN		0	0	0	1	1	0	0	0	9
19	25	EM		0	0	0	1	1	0	0	1	10
1A	26	SUB		0	0	0	1	1	0	1	0	11
1B	27	ESC		0	0	0	1	1	0	1	1	12 (VT)
1C	28	FS		0	0	0	1	1	1	0	0	13
1D	29	GS		0	0	0	1	1	1	0	1	14
1E	30	RS		0	0	0	1	1	1	1	0	Start Load
1F	31	US		0	0	0	1	1	1	1	1	End Load
			(X = Undefined, 0, or 1) (1 = High) (0 = Low)

Clearing the EVFU Memory

The following actions reset (clear) the EVFU memory:

•Sending only the start load code.

•Sending a start load code followed immediately by an end load code.

•A second start load code is received, resulting in reinitialization of the EVFU. (This allows the host data to be restarted.)

When the EVFU memory is cleared, the forms length returns to the previously set value and the current print position becomes the top-of-form (TOF).

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