[V9990] Q&A Official Thread

tried the image hd from https://www.file-hunter.com/MSX/index.php?id=symbos (as commented at https://www.msx.org/forum/msx-talk/general-discussion/image-... ) - actually, and finally, it’s now the very first time i’m actually trying to use SymbOS, on WebMSX!

status info from openmsx-catapult says "expected floating-point number but got ""Uncaught exception: No hard disk named 'hda'."

thanks! now i got this:

so, where from can i get a working preinstalled image supporting gfx9000?

I just wrote this code that does exactly what you asked for:

(init GFX9000/Video9000 register - for compatibility purposes)
100 OUT &H6F,24
(set clock source)
110 OUT &H67,0
(set control register - display=on, VRAM=512k, /Ys activated)
120 OUT &H64,8:OUT &H63,162
(set screen mode)
130 OUT &H64,6:OUT &H63,133
140 OUT &H64,7:OUT &H63,0
(set palette pointer)
150 OUT &H64,14:OUT&H63,0
(set palette 0 colors - TurboR palette here)
160 OUT &H61,128:OUT &H61,0:OUT &H61,0
161 OUT &H61,0:OUT &H61,0:OUT &H61,0
162 OUT &H61,4:OUT &H61,27:OUT &H61,4
163 OUT &H61,13:OUT &H61,31:OUT &H61,13
164 OUT &H61,4:OUT &H61,4:OUT &H61,31
165 OUT &H61,9:OUT &H61,13:OUT &H61,31
166 OUT &H61,22:OUT &H61,4:OUT &H61,4
167 OUT &H61,9:OUT &H61,27:OUT &H61,31
168 OUT &H61,31:OUT &H61,4:OUT &H61,4
169 OUT &H61,31:OUT &H61,13:OUT &H61,13
170 OUT &H61,27:OUT &H61,27:OUT &H61,4
171 OUT &H61,27:OUT &H61,27:OUT &H61,18
172 OUT &H61,4:OUT &H61,18:OUT &H61,4
173 OUT &H61,27:OUT &H61,9:OUT &H61,27
174 OUT &H61,22:OUT &H61,22:OUT &H61,22
175 OUT &H61,31:OUT &H61,31:OUT &H61,31
(set VRAM pointer)
200 OUT &H64,0:OUT &H63,0:OUT &H64,1:OUT &H63,0:OUT &H64,2:OUT &H63,0
(write four bytes)
210 OUT &H60,0:OUT &H60,255:OUT &H60,255:OUT&H60,0
(rinse, repeat...)
220 OUT &H64,0:OUT &H63,0:&H64,1:OUT &H63,1
230 OUT &H60,15:OUT &H60,0:OUT &H60,0:OUT&H60,240
240 OUT &H64,0:OUT &H63,0:&H64,1:OUT &H63,2
250 OUT &H60,240:OUT &H60,240:OUT &H60,15:OUT&H60,15
260 OUT &H64,0:OUT &H63,0:&H64,1:OUT &H63,3
270 OUT &H60,240:OUT &H60,0:OUT &H60,0:OUT&H60,15
280 OUT &H64,0:OUT &H63,0:&H64,1:OUT &H63,4
290 OUT &H60,240:OUT &H60,240:OUT &H60,15:OUT&H60,15
300 OUT &H64,0:OUT &H63,0:&H64,1:OUT &H63,5
310 OUT &H60,240:OUT &H60,15:OUT &H60,240:OUT&H60,15
320 OUT &H64,0:OUT &H63,0:&H64,1:OUT &H63,6
330 OUT &H60,15:OUT &H60,0:OUT &H60,0:OUT&H60,240
340 OUT &H64,0:OUT &H63,0:&H64,1:OUT &H63,7
350 OUT &H60,0:OUT &H60,255:OUT &H60,255:OUT&H60,0

In fact, I've posted a similar code a few pages ago. Have fun!

EDIT: some info on setting video modes extracted from manual:

and also:

Screen mode registers

       B7    B6    B5    B4    B3    B2    B1    B0  
R#6  DSPM1 DSPM0 DCKM1 DCKM0 XIMM1 XIMM0 CRLM1 CLRM0
R#7    0    C25M  SM1    SM   PAL    EO    IL   HSCN


DSPM1 DSPM0  Display Mode Selection
  1     1    : Stand-by mode (non-display, no VRAM refresh, KROM readable)
  1     0    : Bitmap Mode (B1˜6)
  0     1    : P2 Mode
  0     0    : P1 Mode

DCKM1 DCKM0  Dot Clock Selection (em conjunto com MCS)
               MCS=0     MCS=1
  1     0    : XTAL1     MCKIN
  0     1    : XTAL1/2   MCKIN/2
  0     0    : XTAL1/4   -

XIMM1 XIMM0  Selection of number of dots in X direction
  1     1    : 2048 dots
  1     0    : 1024 dots
  0     1    :  512 dots
  0     0    :  256 dots

CLRM1 CLRM0  Selection of bit number per dot
  1     1    : 16 bits/dot
  1     0    :  8 bits/dot
  0     1    :  4 bits/dot
  0     0    :  2 bits/dot

SM1          Selection of total number of vertical lines 
 1           : 263
 0           : 262

SM           Horizontal frequency
 1           : 1H=fsc/227.5
 0           : 1H=fsc/228

PAL          Selection PAL mode
 1           : PAL
 0           : NTSC

EO           Selection of Vertical resolution during interlace
 1           : 2x non-interlace res
 0           : 1x non-interlace res

IL           Selection of interlace
 1           : Interlace
 0           : non-interlace

HSCN         Selection of horizontal high scan
 1           : B5 & B6 modes
 0           : P1, P2, B1˜4 modes


********************
Palette Control 

       B7    B6    B5    B4    B3    B2    B1    B0  
R#13  PLRM1 PLTM0  YAE  PLTAIH PLT05 PLT04 PLT03 PLT02

PLTM1 PLTM0  Selection of color palette mode
  1     1    : YUV mode
  1     0    : YJK mode 
  0     1    : 256 color mode
  0     0    : Palette mode

YAE          Selection of YJK (YUV) RGB Mixing Mode
  1          : YJK (YUV) and RGB images are displayed together
  0          : only YJK (YUV) image is displayed

PLTAIH       Palette no. increment control at palette read-out
  1          : R#14 palette pointer is not changed by P#1 read-out
  0          : After P#1 read-out, R#14 palette pointer undergoes an increment.

PLT05-2      : Still screen palette no. offset

@nitrofurano I am curious on what are you doing...