2 Tunnel NetName PCLK Clock Frequency 20 runRealTime true In Label PCLK Rectangle Label Stage 1 Secondary Clear RectHeight 15 RectWidth 35 Tunnel NetName NPCLK Not Break Break Text Description State machine & sequencer: SQ0 transition current state if conditions match SQ1 read from memory A SQ2 read from memory B SQ3 write to memory SQ4 counter inc Sequencer clocked by falling edge (NPCLK) Everything else clocked by rising edge (PCLK) And Tunnel rotation NetName ST_SECCLR Tunnel rotation NetName OVF_SECCLR And Tunnel rotation NetName ST_EVAL Or Inputs 3 And Inputs 3 Tunnel NetName CLK_STAGE Tunnel rotation NetName PCLK Tunnel rotation NetName SQ_TRANS Counter Label STAGE Bits 2 Decoder Selector Bits 2 flipSelPos true Tunnel NetName ST_SECCLR VDD Tunnel NetName ST_EVAL Tunnel NetName ST_RENDER Or Tunnel rotation NetName CLK_STAGE Tunnel rotation NetName RST Or Tunnel rotation NetName OVF_EVAL Tunnel rotation NetName OVF_SMN Tunnel NetName STAGE Multiplexer Selector Bits 2 Tunnel NetName SEC_C Ground rotation Tunnel rotation NetName STAGE Tunnel rotation NetName CLK_WRITE Tunnel rotation NetName CLK_READA Multiplexer Selector Bits 2 Tunnel NetName SEC_str VDD rotation Ground rotation Multiplexer Selector Bits 2 Tunnel NetName SEC_ld VDD rotation Multiplexer Selector Bits 2 Tunnel NetName SB_C Ground rotation Ground rotation Tunnel rotation NetName STAGE Multiplexer Selector Bits 2 Tunnel NetName SB_str Multiplexer Selector Bits 2 Tunnel NetName SB_ld VDD rotation Counter Label SEC CLR ADDR Bits 4 Or Tunnel rotation NetName RST Tunnel rotation NetName CLK_WRITE Driver Bits 3 Tunnel NetName SEC_A Tunnel NetName ST_SECCLR Driver Bits 32 Tunnel NetName ST_SECCLR Tunnel NetName SEC_Din Ground Bits 32 Probe Tunnel rotation NetName ST_SECCLR VDD rotation Ground rotation Ground rotation RAMDualPort AddrBits 3 Label SECONDARY Bits 32 Probe Label SEC_D Tunnel rotation NetName SEC_ld Tunnel rotation NetName SEC_str Tunnel rotation NetName SEC_A Tunnel rotation NetName SEC_Din Tunnel rotation NetName SEC_C RAMDualPort AddrBits 7 Label SCAN BUFFER Bits 16 Probe Label SB_D Tunnel rotation NetName SB_A Tunnel rotation NetName SB_Din Tunnel rotation NetName SB_str Tunnel rotation NetName SB_C Tunnel rotation NetName SB_ld Tunnel rotation NetName SB_A Tunnel rotation NetName SB_Din Ground rotation Bits 7 Ground rotation Bits 16 Out Description Scanline buffer data Label SB_D Bits 9 Ground Bits 9 Multiplexer Selector Bits 2 Tunnel NetName SM_C Ground rotation Tunnel rotation NetName STAGE Multiplexer Selector Bits 2 Tunnel NetName SM_str Multiplexer Selector Bits 2 Tunnel NetName SM_ld VDD rotation Tunnel NetName ST_IDLE Ground rotation Ground rotation Tunnel rotation NetName CLK_READA Rectangle RectHeight 40 Label Stage 2 Evaluate sprites RectWidth 35 Counter Label SMN Bits 7 Probe Or Tunnel rotation NetName RST Tunnel rotation NetName CLK_WRITE Tunnel rotation NetName SM_D Splitter Input Splitting 32 Output Splitting 8,10,10,1,1,1,1 Sub Bits 10 Ground Tunnel rotation NetName SCY Comparator Bits 10 Const Value 8 Bits 10 Tunnel NetName YMATCH Tunnel NetName OVF_SMN Tunnel rotation NetName ST_EVAL Splitter Input Splitting 7 Output Splitting 6,1 Tunnel NetName SM_A Tunnel NetName ST_SECCLR LED rotation Tunnel NetName ST_EVAL LED rotation Multiplexer Selector Bits 2 Tunnel NetName TM_C Ground rotation Ground rotation Tunnel rotation NetName STAGE Multiplexer Selector Bits 2 Tunnel NetName TM_str Multiplexer Selector Bits 2 Tunnel NetName TM_ld VDD rotation Ground rotation RAMDualPort AddrBits 11 Label TILE MEM Bits 32 Tunnel rotation NetName TM_C Tunnel rotation NetName TM_str Tunnel rotation NetName TM_ld Text Description Tile mem addr: 8 bits select tile 3 bits select row in tile = 11 bits total Tunnel rotation NetName TM_Din Ground rotation Bits 32 Probe Label TM_D Tunnel rotation NetName TM_A Tunnel rotation NetName TM_Din Text Description 8 bits tile pattern index 10 bits Y position 10 bits X position 1 bit H flip 1 bit V flip 1 bit behind background? (priority) 1 bit palette select = total 4 bytes per sprite x 64 sprites = 128 words RAMDualPort AddrBits 6 Label SPRITE MEM H Bits 16 Tunnel NetName SM_D Tunnel rotation NetName DBUS Tunnel rotation NetName SM_A Tunnel rotation NetName SM_C Tunnel rotation NetName SM_ld Tunnel rotation NetName SM_str RAMDualPort AddrBits 6 Label SPRITE MEM L Bits 16 Tunnel rotation NetName DBUS Tunnel rotation NetName SM_A Tunnel rotation NetName SM_C Tunnel rotation NetName SM_ld Tunnel rotation NetName SM_str Splitter Input Splitting 16,16 Output Splitting 32 Probe Counter Label Sequencer Bits 3 Decoder Selector Bits 3 flipSelPos true Tunnel NetName SQ_TRANS Tunnel NetName SQ_READA Tunnel NetName SQ_READB VDD rotation Tunnel NetName SQ_WRITE Or Tunnel rotation NetName NPCLK Tunnel rotation NetName RST And Tunnel rotation NetName SQ_READA Tunnel rotation NetName PCLK Tunnel NetName CLK_READA And Tunnel rotation NetName ST_RENDER Tunnel rotation NetName OVF_RENDER Tunnel NetName SEC_D Splitter Input Splitting 4 Output Splitting 3,1 Tunnel NetName OVF_SECCLR Tunnel NetName SQ_CLR Or Tunnel rotation NetName SQ_CLR And Tunnel rotation NetName SQ_READB Tunnel rotation NetName PCLK Tunnel NetName CLK_READB And Tunnel rotation NetName SQ_WRITE Tunnel rotation NetName PCLK Tunnel NetName CLK_WRITE Splitter Input Splitting 8,10,10,1,1,1,1 Output Splitting 32 Driver Bits 32 Tunnel NetName ST_EVAL Tunnel NetName SEC_Din In Description Scanline Y (0..524) Label SCY Bits 10 Tunnel NetName SCY In Label DBUS Bits 16 Tunnel NetName DBUS In Description Reset sprite evaluator Label RST Tunnel NetName RST And Inputs 3 Tunnel rotation NetName YMATCH Tunnel rotation NetName SQ_WRITE Tunnel rotation NetName PCLK Counter Label SEC ADDR Bits 4 Or Tunnel rotation NetName RST Probe Tunnel NetName OVF_EVAL Tunnel rotation NetName ST_EVAL Splitter Input Splitting 4 Output Splitting 3,1 Driver Bits 3 Tunnel NetName SEC_A Tunnel NetName ST_EVAL Rectangle RectHeight 30 Label Stage 3 Render line to scanbuf RectWidth 35 Tunnel NetName ST_RENDER LED rotation Counter Label SEC ADDR Bits 4 Probe Tunnel NetName OVF_RENDER Tunnel rotation NetName ST_RENDER Or Tunnel rotation NetName RST And Tunnel rotation NetName SQ_READA Tunnel rotation NetName PCLK Splitter Input Splitting 4 Output Splitting 3,1 Driver Bits 3 Tunnel NetName SEC_A Tunnel NetName ST_RENDER Tunnel rotation NetName SEC_D Splitter Input Splitting 32 Output Splitting 8,10,10,1,1,1,1 Tunnel NetName ST_IDLE LED rotation Text Description Stage 4 Idle Tunnel NetName TM_A Driver Bits 11 Tunnel NetName ST_RENDER Splitter Input Splitting 3,8 Output Splitting 11 Splitter Input Splitting 10 Output Splitting 3,7 Tunnel NetName TM_D Tunnel rotation NetName CLK_READB Or Tunnel rotation NetName CLK_WRITE Tunnel rotation NetName CLK_READB Tunnel rotation NetName SM_A Probe