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.globl _cpc_GetScrAddress
_cpc_GetScrAddress::
; LD IX,#2
; ADD IX,SP
; LD A,0 (IX)
; LD L,1 (IX) ;pantalla
LD HL,#2
ADD HL,SP
LD A,(HL)
INC HL
LD L,(HL)
;LD L,E
;JP cpc_GetScrAddress0
cpc_GetScrAddress0: ;en HL están las coordenadas
;LD A,H
LD (#inc_ancho+1),A
LD A,L
SRL A
SRL A
SRL A
; A indica el bloque a multiplicar x &50
LD D,A ;D
SLA A
SLA A
SLA A
SUB L
NEG
; A indica el desplazamiento a multiplicar x &800
LD E,A ;E
LD L,D
LD H,#0
ADD HL,HL
LD BC,#bloques
ADD HL,BC
;HL APUNTA AL BLOQUE BUSCADO
LD C,(HL)
INC HL
LD H,(HL)
LD L,C
;HL TIENE EL VALOR DEL BLOQUE DE 8 BUSCADO
PUSH HL
LD D,#0
LD HL,#sub_bloques
ADD HL,DE
LD A,(HL)
POP HL
ADD H
LD H,A
inc_ancho:
LD E,#0
ADD HL,DE
RET
bloques:
.DW #0XC000,#0XC050,#0XC0A0,#0XC0F0,#0XC140,#0XC190,#0XC1E0,#0XC230,#0XC280,#0XC2D0,#0XC320,#0XC370,#0XC3C0,#0XC410,#0XC460,#0XC4B0,#0XC500,#0XC550,#0XC5A0,#0XC5F0,#0XC640,#0XC690,#0XC6E0,#0XC730,#0XC780
sub_bloques:
.DB #0X00,#0X08,#0X10,#0X18,#0X20,#0X28,#0X30,#0X38
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