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;#INCLUDE "ALLVARS.ASH"
;------------------------------------------
; RESET - RESET DRV. A 0-SCREEN, 1-MODE, 2-FULL RESET
;
RESET: SUB 2
JR NZ,_RET_OK_
LD (T_FLAG),A
LD (IX-_CUR_VAL),"_"
LD HL,41C0H
LD (SCR_ADR),HL
RET
;------------------------------------------
; OUT_CH - OUTPUT CHAR. A - CHAR
;
_OUT_CH_:EX AF,AF'
XOR A
EX AF,AF'
LD C,A
LD HL,(SCR_ADR)
BIT _OVER,(IX-_FLAG1)
JR Z,_PUT_CH_
CP " "
JR Z,SKP_CH
LD A," "
CP (HL)
JR Z,_PUT_CH_
EX AF,AF'
LD A,CST_OVER
EX AF,AF'
DB 3EH ; LD A,N (SKIP NEXT COMMAND)
_PUT_CH_: LD (HL),C
SKP_CH: BIT _TRANS,(IX-_FLAG1)
JR NZ,DONE_CH
CALL ATTR_
LD A,(COLOR_M)
LD (HL),A
DONE_CH:EX AF,AF'
RET
;
ATTR_: LD A,H ; CONVERT SCREEN ADDRESS TO ATTRIBUTE
OR 0C0H
JR ADV_1
;------------------------------------------
; ADV_POS - ADVANCE POSITION
;
ADV_POS:LD HL,(SCR_ADR)
CALL ADV
LD (SCR_ADR),HL
_RET_OK_: XOR A
RET
ADV: LD A,H
ADV_1: XOR 20H
LD H,A
AND 20H
RET NZ
INC HL
RET
;------------------------------------------
; GOTO_XY - DIRECT ADDRESSATION. C - X, B - Y
;
GOTO_XY:CALL _GOXY__
LD (SCR_ADR),HL
XOR A
RET
_GOXY__ XOR A
LD H,A
RRC C ; C>>1 & SET CF
RRA
RRA
RRA ; A IS 20H IF CF
OR 41H
LD L,B ; HL IS Y
LD B,A ; BC IS (X>>1)+(X&1?2000H:0)+41C0H
SET 7,C
SET 6,C
ADD HL,HL
ADD HL,HL
ADD HL,HL
ADD HL,HL
ADD HL,HL
ADD HL,HL ; Y*=64
ADD HL,BC ; HL IS ADDRESS
RET
;------------------------------------------
; CURS_OO - CURSOR TURN ON/OFF. A - CURS STATE
;
CURS_OO:OR A
EX AF,AF'
LD HL,(SCR_ADR)
BIT _TF_CURATR,(IX-_T_FLAG) ; IF FLEX ATTRIB...
CALL NZ,ATTR_ ; DEAL WITH ATTRIB ADDRESS
EX AF,AF'
LD A,(SAV_CUR) ; CURSOR OFF - RESTORE BUF CONTENTS
CALL NZ,CURS_ON
LD (HL),A
XOR A
RET
CURS_ON:LD A,(HL)
LD (SAV_CUR),A
LD A,(CUR_VAL)
BIT _TF_CURATR,(IX-_T_FLAG) ; IF NO FLEX ATTRIB...
RET Z ; JUMP - SIMPLE PUT
XOR (HL) ; ELSE - XOR'ED VALUE
RET
;------------------------------------------
; CONV_COL - COLOR CONVERT. B-INK, C-PAPER, A-COLOR
;
CONV_COL:LD (COLOR_M),A
XOR A
RET
;------------------------------------------
; SET_CURS - SET CURSOR SCANS. B-BEG LINE, C-END LINE
;
SET_CURS:SET _TF_CURATR,(IX-_T_FLAG) ; PRESUME 'FLEX ATTR' MODE
LD A,7
CP C
JR NZ,SC_1
CP B
LD A,"_"
JR Z,SET_CHR
INC B
DEC B
LD A,3FH
JR Z,SET_ATR
SC_1: BIT 2,B
LD A,0X2C+0X80;","+80H ; ABS CODE OF 'Ü'
JR NZ,SET_CHR
LD A,0X2F+0X80;"/"+80H ; ABS CODE OF 'ß'
BIT 2,C
JR Z,SET_CHR
DEC A
SET_CHR:RES _TF_CURATR,(IX-_T_FLAG)
SET_ATR:LD (CUR_VAL),A
XOR A
RET
FF_ERR: LD A,CS_UNKNO
RET
;------------------------------------------
; CIO_MUX - MUX INPUT. B - FUNC
;
CIO_MUX:EX AF,AF'
LD A,B
;VJMP <FF_ERR,M_VER,M_CURSC,M_CURSA>
CALL _VJMP
DB 4
DW FF_ERR
DW M_VER
DW M_CURSC ; -74=5F4B
DW M_CURSA ; -74=5F4B
M_VER: LD HL,100H ; TEXT MODE DRIVER VERSION
XOR A
RET
M_CURSC EQU SET_CHR ; SET CHAR FROM A FOR CURSOR IMAGE
M_CURSA:SET _TF_CURATR,(IX-_T_FLAG) ; SET ATTRIB FOR CURSOR IMAGE
JR SET_ATR
;---- AUX PROC FOR CLR/ROLL PROCS ---------
_SIZE: LD C,E ; SIZE OF SET OF CHARS.
SRL C ; IN E-DX, OUT C-SIZE1, B-SIZE2
LD B,C
RET NC
INC C
RET
_PREP: EX AF,AF' ; CHECK DX&DY, DETERM. SCREEN ADDR, EVALUATE SIZES
LD A,CS_ERPAR
SCF
INC D
DEC D
RET Z
INC E
DEC E
RET Z ; IF DX OR DY IS 0 - ERROR
CALL _GOXY__
CALL _SIZE
EX AF,AF'
OR A
RET
;----------- ROLL/CLR LOOP ---------------
;
CLR_ROLL:LD A,0C3H ; HL-BUF, BC-SIZES, DE- -SHIFT
LD (CL_SW),A ; C'-CHAR(IF NEED), B'-LINE COUNT
EXX
CR_LP: LD A,C ; IS VALUE
EXX
OR A
CALL NZ,_CLRMOV
BIT _TRANS,(IX-_FLAG1)
JR NZ,CR_SC
PUSH HL
EX AF,AF'
CALL ATTR_
LD A,(COLOR_M)
CALL _CLRMOV
EX AF,AF'
POP HL
CR_SC: XOR A
SBC HL,DE
EXX
DJNZ CR_LP
EXX
RET
_CLRMOV:PUSH DE
PUSH HL
CALL CL_SW ; CALL FIRST PART
POP HL
PUSH HL
EX AF,AF'
CALL ADV
EX AF,AF'
CALL CL_SW ; CALL SECOND PART
POP HL
POP DE
RET
;------------------------------------------
; CLW_WIND - CLEAR WINDOW. BC-Y1&X1, DE-DY&DX, A-CHAR
;
CLW_WIND:CALL _PREP
RET C
LD E,A
PUSH DE
EXX
POP BC ; B'-DY, C'-CHAR
CLR_: EXX
LD DE,_CLR_ ; FORM 'JP _CLR' COMMAND INTO ED_BUF
LD (CL_SW +1),DE
LD DE,-64
CALL CLR_ROLL
RET
_CLR_: PUSH BC
DEC C
JP M,_CL_DN
LD (HL),A
JR Z,_CL_DN
LD D,H
LD E,L
INC DE
LD B,0
LDIR
_CL_DN: POP BC
LD E,B
LD B,C
LD C,E
RET
;------------------------------------------
; ROL_WIND - ROLL WINDOW. BC-Y1&X1, DE-DY&DX, A-DIR:
; 0-UP,1-DOWN,2-RIGHT,3-LEFT
;
ROL_WIND:CALL _PREP
RET C ; HL - ADDR, BC-SIZE 2&1
CP 2
JR NC,ROLL_HOR ; HORIZONTAL ROLL
RRA
DEC D
JR Z,ROL_SC; 1 LINE DON'T ROLL
LD A,D
EXX
LD B,A ; B' IS LINE COUNT
LD C,1 ; C' NOT ZEROED
EXX
LD DE,_MOVE; FORM 'JP _MOVE' COMMAND INTO ED_BUF
LD (CL_SW +1),DE
LD DE,-64 ; PRESUME 'ROLL UP'
JR NC,IS_UPP ; JUMP IF WAS 'ROLL UP' COMMAND
EX DE,HL
LD L,A
LD H,0
ADD HL,HL
ADD HL,HL
ADD HL,HL
ADD HL,HL
ADD HL,HL
ADD HL,HL ; .. AND MULTIPLY IT BY 64
ADD HL,DE
LD DE,64 ; HL -> END OF WINDOW, DE - 64
IS_UPP: PUSH BC
CALL CLR_ROLL
POP BC
EXX
ROL_SC: LD BC,0X100+0X20;256+" "
JR CLR_
ROLL_HOR:LD A,B
LD BC,ADV ; INC PROC IN 'ROLL RIGHT' CASE
JR Z,RH_OK
CALL ADD_HL_A
LD BC,DEG ; ELSE DEC PROC
BIT 0,E
CALL Z,DEG
RH_OK: LD (CL_SW +1),BC
LD A,0C3H
LD (CL_SW ),A
RH_LP: LD A," "
PUSH HL
CALL RH_DO ; PULL SYMBOL ' ' TO SCREEN LINE
POP HL
BIT _TRANS,(IX-_FLAG1)
JR NZ,RH_SC
PUSH HL
CALL ATTR_
LD A,(COLOR_M)
CALL RH_DO ; AND PULL ATTRIBUTE (IF NEED)
POP HL
RH_SC: LD BC,64
ADD HL,BC
DEC D
JR NZ,RH_LP
XOR A
RET
RH_DO: LD B,E ; IS DX
LD C,A ; IS PULLED VALUE
RH_PULL:LD A,(HL) ; PULL LOOP
LD (HL),C
LD C,A
CALL CL_SW
DJNZ RH_PULL
RET
DEG: LD A,H
XOR 20H
LD H,A
AND 20H
RET Z
DEC HL
RET
_MOVE: PUSH DE ; C-SIZE, DE-DISP. HL,DE,BC,A-PRESERVE
PUSH BC
PUSH HL
PUSH HL
OR A
SBC HL,DE
POP DE
LD B,0
INC C
DEC C
JR Z,_MV1
LDIR
_MV1: POP HL
POP BC
LD E,B
LD B,C
LD C,E
POP DE
RET
;.COMMENT @
;------------------------------------------
; IMG_PG - PUT/GET IMAGE. BC-Y1&X1, DE-DY&DX, HL-BUF
; A.[0:6]-PAGE, A.[7]-FUNC:
; 0-GET/1-PUT IMAGE
;
;IMG_PG: PUSH HL
; CALL _PREP
; EX AF,AF'
; AND 1FH
; CALL $; ED_SET
; EX AF,AF'
; LD B,D ; B-DY
; LD C,E ; C-DX
; POP DE ; DE-BUF ADDR, HL-SCREEN ADDR
; RET C ; RET IF ERROR INTO '_PREP'
; ADD A,A
; EXX
; LD HL,PUT_PRG
; JR C,PUT_IM
; LD HL,GET_PRG
;PUT_IM: LD DE,ED_BUF
; LD BC,LEN_PRG
; LDIR
; EXX
; EX DE,HL ; HL-BUF, DE-SCREEN
;IMG_LP: PUSH BC
; PUSH DE
;I_LLP: CALL ED_BUF ; MOVE ONE CHAR
; PUSH DE
; EX DE,HL
; CALL ATTR_
; EX DE,HL
; CALL ED_BUF ; ... AND ONE ATTRIBUTE
; POP DE
; EX DE,HL
; CALL ADV
; EX DE,HL
; DEC C
; JR NZ,I_LLP
; EXX ; NEXT LINE
; POP HL
; LD BC,64
; ADD HL,BC
; PUSH HL
; EXX
; POP HL
; POP BC
; DJNZ IMG_LP
; XOR A
; RET
;GET_PRG:LD A,(DE)
;STA PP
; RET
;PUT_PRG:;LDA PP
; LD (DE),A
; RET
;LEN_PRG EQU PUT_PRG-GET_PRG