Changes

Programming:Next / previous line calculation

205 bytes added, 10:43, 16 January 2016

/* Firmware */

call SCR_NEXT_LINE

ACTUAL #BC26 ROUTINE FOLLOWS:

ld a,h:add #08:ld h,a:and #38:ret nz

ld a,h:sub #40:ld h,a:ld a,l:add reg1*2:ld l,a:ret nc ;reg1= CRTC reg.1 value

inc h:ld a,h:and #07:ret nz

ld a,h:sub #08:ld h,a:ret

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