Hi all, Happy new year
I'm currently working on a VT100 terminal and need to redefine all characters in ANSi
I got the definition done:
ANSI:
DEFB &00,&7E,&7E,&6C,&10,&38,&10,&00,&FF,&00,&FF,&0F,&3C,&3F,&7F,&99
DEFB &80,&02,&18,&66,&7F,&3E,&00,&18,&18,&18,&00,&00,&00,&00,&00,&00
DEFB &00,&10,&28,&28,&10,&C2,&30,&40,&10,&10,&92,&00,&00,&00,&00,&02
DEFB &7C,&10,&7C,&7C,&0C,&FE,&38,&FE,&7C,&7C,&00,&00,&08,&00,&20,&7C
DEFB &7C,&38,&FC,&7C,&FC,&FE,&FE,&3C,&82,&7C,&3E,&82,&80,&82,&82,&38... and so on...
Every DEFB entry contain two characters (8 bytes per character)
I've got some trouble to apply this using the firmware.
TXT GET MATRIX
TXT SET MATRIX
TXT SET M TABLE
TXT GET M TABLE
Knowing all caracters will be redefine and they are in order how to proceed in assembly.
Thanks in advance
With TXT_SET_M_TABLE you reserve a memory Area for a charset ( "Symbol After"-Command of Basic)
and with TXT_SET_MATRIX you fill it with your definitions. ("Symbol"-Command of Basic)
InitCharset
LD DE,<Number of first char> ; Flag for new Table in Ram, Reg D=0 - creates a new table
LD HL,charsetspace
CALL TXT_SET_M_TABLE
LD A,<Number of first char>
LD HL,ANSI ; Address of your definitions
defNextchar
PUSH AF
PUSH HL
CALL TXT_SET_MATRIX
POP HL
POP AF
LD BC,8
ADD HL,BC
INC A
JR NZ,defNextchar
RET
charsetspace:
ds <number of bytes needed for the new charset>
Thanks, I had an answer on another forum but similar to your answer.
It works greats.