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| author | Juan J. Martinez <jjm@usebox.net> | 2021-05-03 08:21:10 +0100 |
|---|---|---|
| committer | Juan J. Martinez <jjm@usebox.net> | 2021-05-03 10:00:00 +0100 |
| commit | c3b0fa04a663fe233765b83d3be41a42aa08c25d (patch) | |
| tree | 0befda349001ef6ce306b39378f9c70ad917363e /lib/cpcrslib/cpc_PutSp2x14.s | |
| download | return-of-traxtor-cpc-c3b0fa04a663fe233765b83d3be41a42aa08c25d.tar.gz return-of-traxtor-cpc-c3b0fa04a663fe233765b83d3be41a42aa08c25d.zip | |
Diffstat (limited to 'lib/cpcrslib/cpc_PutSp2x14.s')
| -rw-r--r-- | lib/cpcrslib/cpc_PutSp2x14.s | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/cpcrslib/cpc_PutSp2x14.s b/lib/cpcrslib/cpc_PutSp2x14.s new file mode 100644 index 0000000..241d66b --- /dev/null +++ b/lib/cpcrslib/cpc_PutSp2x14.s @@ -0,0 +1,50 @@ +.globl _cpc_PutSp4x14 + +_cpc_PutSp4x14:: ; dibujar en pantalla el sprite + ; Entradas bc-> Alto Ancho + ; de-> origen + ; hl-> destino + ; Se alteran hl, bc, de, af + + LD IX,#2 + ADD IX,SP + LD e,0 (IX) + LD d,1 (IX) ;sprite + LD l,2 (IX) + LD h,3 (IX) ;address + ld A,#14 + +pc_PutSp0X: + .DB #0XFD + LD H,A ;ALTO, SE PUEDE TRABAJAR CON HX DIRECTAMENTE + LD B,#7 +ancho0X: +loop_alto_2_pc_PutSp0X: + LD C,#4 +loop_ancho_2_pc_PutSp0X: + EX DE,HL + LDI + LDI + LDI + LDI + EX DE,HL + ;LD A,(DE) + ;LD (HL),A + ;INC DE + ;INC HL + ;DEC C + ;JP NZ,loop_ancho_2_pc_PutSp0X + .DB #0XFD + DEC H + RET Z + +suma_siguiente_linea0X: +salto_linea_pc_PutSp0X: + LD C,#0XFC ;&07F6 ;SALTO LINEA MENOS ANCHO + ADD HL,BC + JP nc,loop_alto_2_pc_PutSp0X ;sig_linea_2zz ;si no desborda va a la siguiente linea + LD BC,#0XC050 + ADD HL,BC + LD B,#7 ;SÓLO SE DARÍA UNA DE CADA 8 VECES EN UN SPRITE + JP loop_alto_2_pc_PutSp0X + |