| IBM | Commands |
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| Notes |
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| Function | (ASCII, Decimal, Hexadecimal) |
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| ESC Y, and ESC Z commands. Ratio is |
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| determined by value of variable n: |
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| n=0 or 1: 5 horizontal/ 6 vertical |
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| n=2: 1 horizontal/ 1 vertical |
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| n=3: Command ignored |
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| Invalid (trapped) in IBM AGM emula- |
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| Graphics, 8 & |
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| Mode |
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| Graphics Select/ Print | ASCII: ESC * m l h [graphics data] | Selects |
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| Dec: 27 42 m l h [graphics data] | and prints graphic data. Valid only for |
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| Hex: 1B 2A m l h [graphics data] | IBM AGM. |
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| m=0: Single density, |
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| m=1: Double density, |
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| m=2: Double speed, double density, |
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| printed directly adjacent to one another) |
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| m=3: Quadruple density, |
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| 240 dpi (dots can not be printed directly |
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| adjacent to one another) |
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| m=4: CRT I, |
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| m=6: CRT II, |
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| m=32: Single density, |
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| m=33: Double density, |
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| m=38: CRT III, |
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| m=39: Triple density, |
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| m=40: |
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| dpi (dots can not be printed directly ad- |
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| jacent to one another). |
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| l, h=0 to 255: specifies amount of subse- |
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| quent Bit Image bytes received, |
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| calculated as l + (h x 256) |
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| Graphics Select | ASCII: ESC [ g l h m [graphics data] | Selects graphics and prints |
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| Dec: 27 91 103 l h m [graphics data] | m=0: Single density, |
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| Hex: 1B 5B 67 l h m [graphics data] | [same as ESC * () ] |
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| m=1: Double density, |
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| [same as ESC * 1] |
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| m=2: Double speed, double density, |
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| in, |
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| m=3: Quadruple density, |
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| 240 dpi [same as ESC * 3] |
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| m=8: Single density, |
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| [same as ESC * 32] |
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ML790/791 Printer Handbook | 115 |