nein matel, ich hab alles so weit möglich nur mehr an TFTs, auch den amiga+c64.
back to topic:
extra die customer test floppy raus gesucht, mein bild ist völlig OK:

wenn auch die handykamera so scheiße ist, dass die obere und untere reihe fast gleich aussehen..
nun, fazit: kompatibel ist nicht original.
zumindest bei CGA.
mein portable 386er ist bei topview und cga_comp noch schlechter.


Zitat von http://web.archive.org/web/20160807090944/https://www.cs.nyu.edu/~mwalfish/classes/15fa/ref/hardware/vgadoc/CGA.TXT
3DEh (R/W): AT&T Mode Register (CT82c426 only)
bit 0 AT&T Mode. Only effective if 3D4h index D8h bit 5 is set.
If clear text modes are displayed as 16line characters and graphics
modes are displayed 200 line scandoubled resolution.
If set text modes are displayed with 16line characters and graphics
modes are displayed as true 400 line modes.
3 Page Select. If set display memory is in the 16KB starting from
BC000h, if clear in the 16KB starting at B8000h. If there is less
than 32KB of video memory this has no effect.
6 Enable Underline. If set bit 0 of the attribute byte selects
underline (as in the MDA), if clear it selects blue ForeGround.
Note: this register is only accessible if 3D4h index D8h bit 5 is set.
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