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;

; Name entry screen patch for code that writes to the in-RAM name table copy

;

; Written in TASM 3.0.1

;



#include "vars.asm"



.org $429b			; $429b-$42b4 inclusive



WriteLetterIndexAToDE: ; $429b

; parameters:

; de = where to write tile data (pointing to lower tile of pair)

; a = char number (space = 0)

; returns:

; c = low byte of name table value

; a = high byte

    push   hl

    ex     de,hl

    ld     hl,$ffff

    ld     (hl),$02

    ld     hl,$8000

    ld     c,a

    ld     b,$00

    add    hl,bc

    add    hl,bc

; Original code:

;    ld     c,(hl)          ; 4E       ; get value in c,a

;    inc    hl              ; 23

;    ld     a,(hl)          ; 7E

;    ld     (de),a          ; 12       ; write to address passed in in de

;    ld     hl,-64          ; 21 C0 FF

;    add    hl,de           ; 19       ; and 1 row above it

;    ld     (hl),c          ; 71

; Patch:

    ld a,(hl)              ; 7E

    ld (de),a              ; 12

    ld c,a                 ; 4F

    inc hl                 ; 23

    inc de                 ; 13

    ld a,(hl)              ; 7E

    ld (de),a              ; 12

; End patch

    pop    hl

    ret



; 2 bytes smaller



.end				; tasm-only