PRIMUS P2000 P2000 2MB max 1280x1024/256c, 800x600/32k. P3000 P2000 with line draw The P2000 is an accelerator card. 3CEh index 13h (R/W): bit 5 Clock ? 6 If set interlaced display is enabled, and the display offset (CRTC index 13h + 3CEh index 21h bit 5) is divided by 2. 3CEh index 14h (R/W): bit 0 ? 2-3 Divides video clock by. 0: 1, 1: 4, 2: 2, 3: 4 4-5 Clock select bit 2-3 (bits 0-1 are in 3C2h/3CCh bits 2-3) 7 Screen flashes if clear ?? 3CEh index 1Dh (R/W): bit 0-1 Monitor type. 0=35KHz, 1=48KHz, 2=56KHz, 3=65KHz. 3CEh index 1Eh W(R/W): 3CEh index 21h (R/W): bit 0-2 Display start address bit 16-18. 5 Bit 8 of the Display Offset (3d4h index 13h), 3CEh index 30h 3(R/W): Source address bit 0-23 Pixel address of the source area. Calculated as (row * pixels per scanline) + column. For HiColor modes this value should be doubled. Used or BitBLT operations. 3CEh index 33h W(R/W): Width of Blit Area bit 0-15 Width of the Blit Area in pixels. 3CEh index 35h W(R/W): Height of Blit Area bit 0-13 Height of the Blit Area in pixels. 14 Set to step backwards in the destination. 15 Set to step backwards in the source 3CEh index 37h 3(R/W): Destination Address bit 0-23 Pixel address of the destination area. Calculated as (row * pixels per scanline) + column. For HiColor modes this value should be doubled. 3CEh index 3Ah W(R/W): bit 0-15 Width of the destination area in pixels 3CEh index 3Dh (R/W): Status/Command register bit 0 (R): Set if busy with op. 0-7 (W): Command. 00h = NO op. 05h = Copy 07h = BitBlt 19h = Fill rect 25h = BitBLT Invert. 29h = FillRect Invert. 3CEh index 3Eh (R/W): Fill color bit 0-7 Fill color (rect). 3CEh index 3Fh (R/W): 3D6h (R/W): Write bank bit 0-7 Write bank no. in 64kb units. 3D7h (R/W): Read bank bit 0-7 Read bank no. in 64kb units. Accelerated commands are set up as follows: Set up the registers with the parameters (areas, size and color) Wait for bit 0 of 3CEh index 3Dh to clear. Write command to 3CEh index 3Dh. Wait for bit 0 of 3CEh index 3Dh to clear. It is advisable to finish with a NOP (00h) command to terminate the coprocessor. The commands can be modified via the fields in 3CEh index 3 (MOV, AND, OR, XOR). ID Primus P2000: if testinx2($3CE,$3D,$3F) and tstrg($3D6,$1F) and tstrg($3D7,$1F) then _p2000 Video Modes: 1Eh T 80 30 16 (8x16) 1Fh T 80 43 16 (8x11) 20h T 80 60 16 (8x8) 21h T 100 75 16 (8x8) 24h T 132 25 16 (8x14) 25h T 132 30 16 (8x16) 26h T 132 43 16 (8x11) 27h T 132 60 16 (8x8) 28h G 512 512 16 PL4 29h G 512 512 256 P8 2Ah G 800 600 16 PL4 2Bh G 800 600 256 P8 2Ch G 640 400 256 P8 2Dh G 640 480 256 P8 2Eh G 768 1024 16 PL4 2Fh G 768 1024 256 P8 30h G 1024 768 16 PL4 31h G 1024 768 256 P8 32h G 1024 1024 16 PL4 33h G 1024 1024 256 P8 34h G 1152 900 16 PL4 35h G 1152 900 256 P8 36h G 1280 1024 16 PL4 37h G 1280 1024 256 P8 41h G 512 512 32k P15 42h G 640 350 32k P15 43h G 640 400 32k P15 44h G 640 480 32k P15 45h G 800 600 32k P15 4Ah G 640 480 16m P24