ALL (or nearly all) text chars c program listing resource for you

[andrewec]

Hi All,

Please use this as a resource for your ascii/vt100 coding, :-)
Change for your target and memory map.

Settings: Teraterm: vt100, font: consolas, 9600, n, 8, 2 , receive: auto, transmit: any, local echo: any
Assumes monitor cin and cout functions exist in ROM, called seamlessly.

textcharlist.c (in RAM, 8000-FFFFH

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#include <stdio.h>

// Custom function to determine if a character is printable (ASCII 32-126)
int is_custom_printable(int ch) {
    return (ch >= 32 && ch <= 126);
}

int main() {
    // Print multiple CRLF lines at the beginning for a clean terminal display
    for (int i = 0; i < 11; i++) {
        printf("\r\n");
    }

    // Print the header for the ASCII section
    printf("ASCII Test Pattern (32 to 126):\n");
    printf("Dec | Char\n");
    printf("-----------\n");

    // Print the ASCII test pattern from 32 to 126
    for (int i = 32; i < 127; i++) {
        // Use the custom function to check if the character is printable
        char display_char = is_custom_printable(i) ? i : '.';

        // Print the ASCII code and its corresponding character or placeholder
        printf("%3d |   %c\n", i, display_char);
    }

    // Print a separator between sections
    printf("\n");

    // Print a header for the UTF-8 extended character output
    printf("UTF-8 Extended Characters (128 to 255):\n");
    printf("Dec | UTF-8    | Hex\n");
    printf("-------------------------\n");

    // Loop through the values 128 to 255
    for (int i = 128; i <= 255; i++) {
        // Prepare the UTF-8 encoded character as a string
        char utf8_char[3] = {0}; // Two bytes plus null terminator
        if (i <= 191) {
            utf8_char[0] = (char)0xC2;
            utf8_char[1] = (char)i;
        } else {
            utf8_char[0] = (char)0xC3;
            utf8_char[1] = (char)(i - 64);
        }

        // Print the UTF-8 encoded character and its code point
        printf("%3d | %s | 0x%02X\n", i, utf8_char, i);
    }

    // Print a separator between sections
    printf("\n");

    // Print a header for the DEC Special Graphics characters
    printf("DEC Special Graphics Characters (32 to 127):\n");
    printf("Dec | Char\n");
    printf("-----------\n");

    // Switch to DEC Special Graphics Mode
    printf("\033(0");

    // Print the DEC SG characters from 32 to 127
    for (int i = 32; i < 128; i++) {
        printf("%3d | %c\n", i, i);
    }

    // Switch back to US ASCII Mode
    printf("\033(B");

    // Ensure a final newline for terminal neatness
    printf("\n");

    return 0;
}

monitor.c (in ROM, 0000-7FFFH)

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#include <stdio.h>

int fputc_cons_native(char c) __naked
{
__asm
    pop     b  ;return address
    pop     h  ;character to print in l
    push    h
    push    b
    MOV      a,l
    MOV c,a
    call    $0006 ; replace with your address, outputs a char
    ret
__endasm;
} 

int fgetc_cons() __naked
{
__asm
    call    $0031 ; replace with your address, gets a char
    mov     l,a     ;Return the result in hl
    mvi     h,0
    ret
__endasm;
}

compile line , e.g. to RAM

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zcc +z80 -clib=8085 textcharlist.c monitor.c -pragma-define:CRT_ORG_CODE=0x8000 -pragma-define:REGISTER_SP=0xFFFE -m -create-app

p.s. Extended chars are font dependent, use a font that supports utf-8, some artifcats may display when using dec special graphics chars.

Cheers,
Andrew

[andrewec]

Clarification: I meant the assembly language routines are in ROM:COUT,CIN(CALL $0006, CALL $0031), not monitor.c which gets compiled to RAM.