Colours on a Microbee

[MbeeTech]

How do I set the 256TC into 64 column mode?

Here's a code snippet to set 64 x 16 screen mode :

Code:

crtc    equ    0ch    ;6545 control port
crtd    equ    0dh    ;6545 data port


;set up the 64*16 screen format
init64:
    ld    hl,d6545
    ld    b,16
lp6545:    
        ld    a,b
    dec    a
    out    (crtc),a
    ld    a,(hl)
    out    (crtd),a
    dec    hl
    djnz    lp6545
    ret

;--------------------------------------------------------------------------
;6545 (Video Driver Chip) DATA (data to set the 6545 to 64*16 screen format
;--------------------------------------------------------------------------
    db    108-1    ;horizontal sync timing constant
    db    64            ;number of displayed characters per line
    db    81            ;horizontal sync position
    db    55            ;horizontal and vertical sync width
    db    19-1            ;vertical sync width
    db    09            ;vertical sync timing constant
    db    16            ;number of displayed rows per screen
    db    17            ;vertical sync position
    db    72            ;mode control constant
    db    16-1            ;number of scan lines per character
    db    20h+15    ;cursor mode and start line
    db    15            ;cursor end line
    dw    0            ;display start address relative to 0F000h
    db    0            ;cursor position
d6545:    
        db    0