Character codes: Difference between revisions
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Puppydrum64 (talk | contribs) m →{{header|68000 Assembly}}: formatting |
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<lang XPL0>IntOut(0, ^a); \(Integer Out) displays "97" on the console (device 0) |
<lang XPL0>IntOut(0, ^a); \(Integer Out) displays "97" on the console (device 0) |
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ChOut(0, 97); \(Character Out) displays "a" on the console (device 0)</lang> |
ChOut(0, 97); \(Character Out) displays "a" on the console (device 0)</lang> |
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=={{header|Z80 Assembly}}== |
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The Z80 doesn't understand what ASCII codes are by itself. Most computers/systems that use it will have firmware that maps each code to its corresponding glyph. Printing a character given its code is trivial. On the Amstrad CPC: |
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<lang z80>LD A,'a' |
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call &BB5a</lang> |
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Printing a character code given a character takes slightly more work. You'll need to separate each hexadecimal digit of the ASCII code, convert each digit to ASCII, and print it. Once again, thanks to Keith of [http://www.chibiakumas.com] for this code: |
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<lang z80>ShowHex: |
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push af |
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and %11110000 |
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rrca |
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rrca |
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rrca |
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rrca |
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call PrintHexChar |
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pop af |
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and %00001111 |
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;call PrintHexChar (execution flows into it naturally) |
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PrintHexChar: |
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or a ;Clear Carry Flag |
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daa |
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add a,&F0 |
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adc a,&40 ;this sequence of instructions converts a single hex digit to ASCII. |
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jp PrintChar ;this is whatever routine prints to the screen on your system. |
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; It must end in a "ret" and it must take the accumulator as its argument.</lang> |
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=={{header|Zig}}== |
=={{header|Zig}}== |
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