Andrea Gasparrini wrote:
> Hi to all you of MSX,
>
> I am Andrea and I write from Italy for a programming problem on the
> assembler language.
> With this routine that follows it is possible obtain a multicolor
> sprite, a sprite of two color:
>
> SPRITE OF TWO COLORS.
>
> Varying in the table of the attribute of the sprite the element in
> relation with the name and the color of the sprite to every video
> scansion, it is possible produce sprite that they are to all appearances
> of two color. He is suggested of following the method that follows:
> Before all determines in two modes the sprite: a definition for each
> colors.
> The definitions must reside in the retinue VIDEO RAM to the other, in
> mode that the definitions 0 and 1 determine a first multicolors sprite,
> the definitions 2 and 3 a second and like that street.
> On the routine in assembler I have noted that there is an error on the
> line:
> SPSWIT: LD HL,SATTAB
> In fact to me this routine not works me, praies you of helps it to make
> it works, with some modification.
> The routine that follows illustrious when dictates:
>
> SPSWTB: DEFS 32
> SPSWIT: LD HL,SATTAB
> LD DE,SPSWTB
> LD B,32
> SPSWLP: CALL 004AH
> CP 0D0H
> RET Z
> INC HL
> INC HL
> CALL 004AH
> XOR 1
> LD C,A
> CALL 004DH
> INC HL
> LD A,(DE)
> AND A
> RR C
> JR C,SKP
> SLA A
> SLA A
> SLA A
> SLA A
> SKP: AND 15
> LD C,A
> CALL 004AH
> AND 80H
> OR C
> CALL 004DH
> INC HL
> INC DE
> DJNZ SPSWLP
> RET
>
> Sent soon yours good news
> Answering to the address: [EMAIL PROTECTED]
>
> Goodbye to all you.
>
> Andrea Gasparrini from Italy.
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