snark13
737c974400
- Split tests/ (libc feature tests) and examples/ (real apps); shared
app.mk in repo root, was examples/example.mk
- libc/io/* split into libc/{conio,env,errno,file,mouse,string,sys,
time,video}/ — clearer module boundaries
- New examples/mdview/: markdown viewer (Phases 1-5 + light nested
lists). Headers (H1-H4), HR, ulist/olist/quote with nesting via
leading spaces, fenced code blocks, inline emphasis (bold/italic/
underscore/code), wrap/unwrap mode with soft wrap (F2), horizontal
pan (← →) with '>' truncation indicator
- libc additions: scroll() in conio (ESTEX SCROLL), strlwr/strupr,
gets() test
- Makefile updates across tests/ for the new shared app.mk path
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
35 lines
870 B
C
35 lines
870 B
C
/*
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* putchar — emit one character via ESTEX PUTCHAR ($5B).
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*
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* Turbo-C convention: this stdio.h function is the FAST path with NO
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* attribute control. Whatever ESTEX has cached for the cursor cell is
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* used (typically the shell's default colour). Translates '\n' to
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* CR LF for C-string semantics.
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*
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* For coloured output, use putch() / cputs() / cprintf() from <conio.h>
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* — those honour textattr / g_text_attr at the cost of being ~10× slower.
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*
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* SDCC __sdcccall(1): char arg in L (low byte of HL=int). Returns the
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* char in DE (SDCC int return).
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*/
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#include <stdio.h>
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int putchar(int c) __naked
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{
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(void)c;
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__asm
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ld a, l
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cp #0x0A
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jr nz, cputc
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call cputc
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ld a, #0x0D
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cputc:
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ld c, #0x5B
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rst #0x10
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ld e, l
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ld d, #0
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ret
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__endasm;
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}
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