RELEASE V1.21 (incl stable bitstreams)

sy2002 · Feb 13, 2016 · 306a18f · 306a18f
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diff --git a/README.md b/README.md
@@ -26,12 +26,21 @@ Getting Started
 
 * Hardware: Currently, we develop QNICE-FPGA on a Nexys 4 DDR development
   board, so if you own one, the fastest way of getting started is to
-  download the bitstream file `dist_kit\env1.bit` on the SD card of the
+  download the bitstream file `dist_kit/qnice.bit` on the SD card of the
   Nexys board and set the jumpers to read the FPGA configuration from the
-  SD card. Attach an "old" USB keyboard supporting boot mode to the board
-  and attach a VGA monitor. Attach the USB cable to your desktop computer,
-  so that you can setup a serial (terminal) connection between the desktop
-  and the FPGA.
+  SD card. Do not copy more than one `*.bit` file on the SD card, i.e. do
+  not copy `dist_kit/q-tris.bit`, yet. Do empty the "Recycle Bin" or similar
+  of your host OS between two `*.bit` copies, so that the Nexys board does not
+  accidentally read the `*.bit` from your trash instead of the recent one.
+
+* If you do not own a Nexys 4 DDR board, then use your VHDL development
+  environment to synthesize QNICE-FPGA. The root file for the system
+  is `vhdl/env1.vhdl`. Make sure that you connect at least the IO pins
+  for PS2, VGA, UART and the two switches.
+
+* Attach an "old" USB keyboard supporting boot mode to the board and attach
+  a VGA monitor. Attach the USB cable to your desktop computer, so that you
+  can setup a serial (terminal) connection between the desktop and the FPGA.
 
 * On your host computer: Open a terminal and head to the root folder of the
   QNICE-FPGA GIT repository.
@@ -82,3 +91,28 @@ Getting Started
   and page up/down keys to scroll.
 
 More documentation to come.
+
+Q-TRIS
+------
+
+Q-TRIS is a Tetris clone and the first game ever developed for QNICE-FPGA.
+The rules of the game are very close to the "official" Tetris rules as
+they can be found on 
+[http://tetris.wikia.com/wiki/Tetris_Guideline](http://tetris.wikia.com/wiki/Tetris_Guideline).
+
+![Q_TRIS_IMG](doc/demos/demo_q_tris.jpg)
+
+Clearing a larger amount of lines at once (e.g. Double, Triple, Q-TRIS)
+leads to much higher scores. Clearing a certain treshold of lines leads to the
+next level. The game speed increases from level to level. If you clear
+1.000 lines, then you win the game.
+
+Q-TRIS uses the PS2/USB keyboard and VGA, no matter how STDIN/STDOUT
+are routed. All speed calculations are based on a 50 MHz CPU that is equal
+to the CPU revision contained in release V1.21.
+
+The game can run stand-alone, i.e. instead of the Monitor as the "ROM"
+for the QNICE-FPGA: Just use `dist_kit/q-tris.bit` instead of the
+above-mentioned `dist_kit/qnice.bit`. Or, you can run it regularly as an app
+within the Monitor environment. In this case, compile it and then load it with
+the `M L` command sequence and start Q-TRIS using the address `0x8000`.
diff --git a/VERSIONS.txt b/VERSIONS.txt
@@ -1,3 +1,12 @@
+Version 1.21   February, 13 2016
+================================
+
+* Fixed predecrement CPU bug
+* Q-TRIS V1.0: Tetris clone and first game ever programmed for Q-NICE.
+  Needs VGA and keyboard. Located in demos/q-tris.asm, starts at 0x8000 when
+  being run via the monitor. Additionally, there is a special stand-alone
+  autostart bitstream for the Digilent Nexys 4 DDR in dist_kit/q-tris.bit
+
 Version 1.2  January, 10 2016
 =============================
 

diff --git a/demos/q-tris.asm b/demos/q-tris.asm
@@ -18,7 +18,7 @@
 ; are routed. All speed calculations are based on a 50 MHz CPU that is equal
 ; to the CPU revision contained in release V1.21.
 ;
-; The game can run stand-alone, i.e. instead of the monitor as the "ROM"
+; The game can run stand-alone, i.e. instead of the Monitor as the "ROM"
 ; for the QNICE-FPGA - or - it can run regularly as an app. In the latter case
 ; it loads to 0x8000. #define QTRIS_STANDALONE for the standalone mode.
 ;

diff --git a/dist_kit/q-tris.bit b/dist_kit/q-tris.bit
diff --git a/dist_kit/env1.bit → dist_kit/qnice.bit b/dist_kit/env1.bit → dist_kit/qnice.bit
diff --git a/doc/demos/demo_q-tris.jpg b/doc/demos/demo_q-tris.jpg
diff --git a/doc/demos/demo_q_tris.jpg b/doc/demos/demo_q_tris.jpg
diff --git a/pore/boot_message.asm b/pore/boot_message.asm
@@ -2,4 +2,4 @@ PORE$NEWLINE  .ASCII_W "\n"
 
 ; PORE$RESETMSG .ASCII_W "QNICE-FPGA [WIP] [only 16 reg-banks!] by sy2002 in January 2016 (GIT #"
 
-PORE$RESETMSG .ASCII_W "QNICE-FPGA Version 1.21 by sy2002 in February 2016 (GIT COMMIT #8e368ed)\n"
+PORE$RESETMSG .ASCII_W "QNICE-FPGA Version 1.21 by sy2002 in February 2016 (GIT COMMIT #4a4fdfa)\n"
diff --git a/vhdl/env1_globals.vhd b/vhdl/env1_globals.vhd
@@ -13,7 +13,7 @@ package env1_globals is
 constant ROM_FILE             : string    := "../monitor/monitor.rom";
 constant ROM_SIZE             : natural   := 2840;
 --constant ROM_FILE             : string    := "../demos/q-tris.rom";
---constant ROM_SIZE             : natural   := 4522;
+--constant ROM_SIZE             : natural   := 4542;
 
 -- file name of file and file size (in lines) of the file containing the Power On & Reset Execution (PORE) ROM
 constant PORE_ROM_FILE        : string    := "../pore/pore.rom";