Difference between revisions of "Express"
m (Fixes) |
m (→Patch/Kernel) |
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* Copying rectangles "work" but the board gets stuck | * Copying rectangles "work" but the board gets stuck | ||
| − | + | =Locations= | |
| + | These are the possible locations where the XZ board can be found. | ||
| + | |||
* 0x1f000000 | * 0x1f000000 | ||
* 0x1f400000 | * 0x1f400000 | ||
* 0x1f600000 | * 0x1f600000 | ||
| − | + | =Commands= | |
Known commands locations into the engine FIFO are: | Known commands locations into the engine FIFO are: | ||
| Line 31: | Line 33: | ||
DATA=paramX | DATA=paramX | ||
| − | + | =Operations= | |
Currently know operations that work are the following: | Currently know operations that work are the following: | ||
| − | + | ==Reading version== | |
rev0=ex_regs->bdversion.rd0 & GR2_REVISION_RD0_VERSION_MASK; | rev0=ex_regs->bdversion.rd0 & GR2_REVISION_RD0_VERSION_MASK; | ||
| Line 40: | Line 42: | ||
hqv=(ex_regs->hq.version & HQ2_VERSION_MASK) >> HQ2_VERSION_SHIFT; | hqv=(ex_regs->hq.version & HQ2_VERSION_MASK) >> HQ2_VERSION_SHIFT; | ||
| − | + | ==Setting color== | |
All drawing operations need a color that it should use: | All drawing operations need a color that it should use: | ||
| Line 46: | Line 48: | ||
[GR2_FIFO_COLOR]=color; | [GR2_FIFO_COLOR]=color; | ||
| − | ===Drawing a rectangle | + | === Palette === |
| + | Unknown. | ||
| + | |||
| + | ==Drawing a rectangle== | ||
First you must set the color and then: | First you must set the color and then: | ||
| Line 57: | Line 62: | ||
Y needs to be flipped as 0,0 is lower left corner. | Y needs to be flipped as 0,0 is lower left corner. | ||
| − | + | ==Character drawing== | |
Set color, then: | Set color, then: | ||
| Line 86: | Line 91: | ||
Be sure to padd up to 18, probably the max font height. | Be sure to padd up to 18, probably the max font height. | ||
| − | + | ==Moving blocks== | |
This is giving a headache right now as all of the above seems to work just fine. | This is giving a headache right now as all of the above seems to work just fine. | ||
| − | + | ==Other== | |
Other operations will be added when we figure them out. | Other operations will be added when we figure them out. | ||
| + | |||
| + | =Patch/Kernel= | ||
| + | |||
| + | No patches just yet. Kernel with sort-of-maybe-working-console can be found from time to time at [http://home.tal.org/~milang/o2/kernels/ onion's kernels page.] | ||
| + | |||
| + | [[Category:SGI]] | ||
Latest revision as of 06:59, 8 October 2010
Thanks to NetBSDs GR2 driver we have out that HQ2.1 is a kind of successor of the HQ2 found in the Indigo(IP12), and at least partialy compatible. Version information can be read in the same way and tests have shown that:
- Drawing colored rectangles work
- Drawing characters work
- Copying rectangles "work" but the board gets stuck
Contents |
[edit] Locations
These are the possible locations where the XZ board can be found.
- 0x1f000000
- 0x1f400000
- 0x1f600000
[edit] Commands
Known commands locations into the engine FIFO are:
#define GR2_FIFO_INIT 0x191 #define GR2_FIFO_COLOR 0x192 #define GR2_FIFO_FINISH 0x193 #define GR2_FIFO_PNT2I 0x194 #define GR2_FIFO_RECTI2D 0x195 #define GR2_FIFO_CMOV2I 0x196 #define GR2_FIFO_LINE2I 0x197 #define GR2_FIFO_DRAWCHAR 0x198 #define GR2_FIFO_RECTCOPY 0x199 #define GR2_FIFO_DATA 0x1df
Most commands seems to work like this:
"LOCATION"=param0 DATA=param1 DATA=param2 .... DATA=paramX
[edit] Operations
Currently know operations that work are the following:
[edit] Reading version
rev0=ex_regs->bdversion.rd0 & GR2_REVISION_RD0_VERSION_MASK; rev1=ex_regs->bdversion.rd1 & 0x03; hqv=(ex_regs->hq.version & HQ2_VERSION_MASK) >> HQ2_VERSION_SHIFT;
[edit] Setting color
All drawing operations need a color that it should use:
[GR2_FIFO_COLOR]=color;
[edit] Palette
Unknown.
[edit] Drawing a rectangle
First you must set the color and then:
[GR2_FIFO_RECTI2D]=x1; [GR2_FIFO_DATA]=y1; [GR2_FIFO_DATA]=x2; [GR2_FIFO_DATA]=y2;
Y needs to be flipped as 0,0 is lower left corner.
[edit] Character drawing
Set color, then:
First move character draw location to x,y
[GR2_FIFO_CMOV2I]=x [GR2_FIFO_DATA]=y
Then set width and height of character:
[GR2_FIFO_DRAWCHAR]=8 [GR2_FIFO_DATA]=16
Some magic:
[GR2_FIFO_DATA]=2; [GR2_FIFO_DATA]=0; [GR2_FIFO_DATA]=0; [GR2_FIFO_DATA]=0; [GR2_FIFO_DATA]=0; [GR2_FIFO_DATA]=0;
Then plot the character, bottom first:
loop for font height: [GR2_FIFO_DATA]=pattern
Be sure to padd up to 18, probably the max font height.
[edit] Moving blocks
This is giving a headache right now as all of the above seems to work just fine.
[edit] Other
Other operations will be added when we figure them out.
[edit] Patch/Kernel
No patches just yet. Kernel with sort-of-maybe-working-console can be found from time to time at onion's kernels page.
