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>
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
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* banked_big — BIG memory mode: base CODE+DATA in W2, banked code in W1.
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*
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* Layout:
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* _CODE at 0x8100 (W2), DATA chained after CODE (W2)
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* _BANK1 / _BANK2 at virtual 0x{N}4000 — physical page mapped into W1
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* trampoline ___sdcc_bcall_ehl swaps port 0xA2 (W1) to call bank funcs
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*
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* Mirrors examples/banked (HUGE mode) for direct comparison.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <sprinter.h>
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/* crt0_banked.s reads this constant to know how many banks to load. */
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const uint8_t n_banks = 2;
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void bank1_func(int x) __banked;
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void bank2_func(int x) __banked;
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extern uint8_t bank_pages[]; /* filled by crt0_banked.s */
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static void show_w1(const char *who)
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{
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puts(who);
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hex8(_io_page_w1); /* current physical page mapped in window 1 */
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putchar('\n');
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}
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int main(void)
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{
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puts("HOME: program start (BIG mode).");
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#ifdef DEBUG_RT
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printf("HOME: w2_self_allocated = %u\n", w2_self_allocated);
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#endif
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show_w1("HOME: window 1 phys page = ");
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puts("HOME: bank_pages[1] (BANK1 phys) = ");
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hex8(bank_pages[1]);
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putchar('\n');
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puts("HOME: bank_pages[2] (BANK2 phys) = ");
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hex8(bank_pages[2]);
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putchar('\n');
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puts("HOME: calling bank1_func(42)...");
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bank1_func(42);
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show_w1("HOME: back, window 1 phys = ");
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puts("HOME: calling bank2_func(123)...");
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bank2_func(123);
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show_w1("HOME: back, window 1 phys = ");
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puts("HOME: done.");
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puts("Press any key to exit...");
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(void)getchar();
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return 0;
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}
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