Routines
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BE4C: Print a string with its colour byte
Used by the routine at display_day.
The game's one text printer. The position is on the stack, the font pointer in $5BC7 selects the glyphs, and each character is an index into that font. The first byte is the attribute for every cell the string covers; the characters follow, and bit 7 marks the last. Glyphs go into the buffer at screen_buffer and the colours straight into attribute memory, one cell per character.
The position is a pixel (x, y) with y counting up from the bottom of the screen, the same convention as the rest of the drawing code, so a string's top edge is at y and it extends eight rows below.
Input
DE the string: a colour byte, then characters in the text code
print_text BE4C POP BC BC = the position, left on the stack; HL = its buffer address
BE4D PUSH BC
BE4E CALL calc_vidbuf_addr
BE51 LD L,C
BE52 LD H,B
BE53 LD A,(DE) the colour byte into A'
BE54 EX AF,AF'
BE55 INC DE
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