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Update ROM_Applications.md
2048 game instructions added
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b1ackmai1er
@@ -45,33 +45,62 @@ for testing and programming. It allows programs to be entered,
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memory to be examined, and input/output devices to be read or
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written to.
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It's key advantage is that is available at boot up.
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It's key advantage is that is available at boot up.
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Its key disadvantages are that code cannot be entered in assembly
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language and there is no ability to save to memory devices.
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The available memory area for programming is `0200-EDFFh`.
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The following areas are reserved:
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Memory Area | Function
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------------|-----------------------------------
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`0000-00FFh`| Jump and restart (RST) vectors
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`0100-01FFh`| HBIOS configuration block
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`FE00-FFFFh`| HBIOS proxy
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Commands can be entered at the command prompt `>`
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Automatic case conversion takes place on command entry and all
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arguments are expected to be in hex format.
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The current memory bank in low memory is displayed before the prompt i.e.:
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`8E>`
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The Monitor allows access to all memory locations but ROM and
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Flash memory cannot be written to. Memory outside the normal
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address range can be accessed using the B command. The first
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256 bytes `0000-01FF` is critical for the HBIOS operation.
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Changing banks may make this information inaccessible.
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Refer to the RomWBW Architecture manual for details memory banking.
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A quick guide to using the Monitor program follows:
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## ? - Displays a summary of available commands.
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```
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Monitor Commands (all values in hex):`
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B - Boot system`
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D xxxx yyyy - Dump memory from xxxx to yyyy`
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F xxxx yyyy zz - Fill memory from xxxx to yyyy with zz`
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H - Halt system`
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I xxxx - Input from port xxxx`
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K - Keyboard echo`
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L - Load Intel hex data`
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M xxxx yyyy zzzz - Move memory block xxxx-yyyy to zzzz`
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O xxxx yy - Output value yy to port xxxx`
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P xxxx - Program RAM at address xxxx`
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R xxxx - Run code at address xxxx`
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S xx - Set bank to xx`
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X - Exit monitor`
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Monitor Commands (all values in hex):
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B - Boot system
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D xxxx yyyy - Dump memory from xxxx to yyyy
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F xxxx yyyy zz - Fill memory from xxxx to yyyy with zz
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H - Halt system
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I xxxx - Input from port xxxx
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K - Keyboard echo
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L - Load Intel hex data
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M xxxx yyyy zzzz - Move memory block xxxx-yyyy to zzzz
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O xxxx yy - Output value yy to port xxxx
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P xxxx - Program RAM at address xxxx
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R xxxx [[yy] [zzzz]] - Run code at address xxxx
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Pass yy and zzzz to register A and BC
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S xx - Set bank to xx
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X - Exit monitor
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```
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## Cold Boot
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B - Performs a cold boot of the ROMWBW system. A complete
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reinitialization of the system is performed and the system
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re-initialization of the system is performed and the system
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returns to the Boot Loader prompt.
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## Dump Memory
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@@ -160,17 +189,20 @@ Use clip leaded LEDs to confirm the data written.
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## Program memory location
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P xxxx - Program memory location xxxx. This routine will
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allow you to program a hexidecimal into memory starting
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allow you to program a hexadecimal value into memory starting
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at location xxxx. Press 'Enter' on a blank line to
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return to the Monitor prompt.
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## NOTES:
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## Run program
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The Monitor allows access to all memory locations. ROM and
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Flash memory cannot be written to. Memory outside the normal
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address range can be accessed using the B command. Page 0
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(first 256 bytes) is critical for the HBIOS operation.
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Changing banks may make this inforrmation inaccessible.
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R xxxx [[yy] [zzzz]] - Run program at location xxxx. If optional
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arguments yy and zzzz are entered they are loaded into the
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A and BC register respectively. The return address of the
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Monitor is saved on the stack so the program can return
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to the monitor. On return to the monitor, the contents of
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the A, HL, DE and BC registers are displayed.
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## NOTES:
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The RTC utility on the CP/M ROM disk provides facilities
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to manipulate the Real Time Clock non-volatile Memory.
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@@ -185,6 +217,77 @@ and then run RTC to see the options list.
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# Play a Game
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## 2048
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2048 is a puzzle game that can be both mindless and challenging. It
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appears deceptively simple but failure can creep up on you suddenly.
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It requires an ANSI/VT-100 compatible colour terminal to play.
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2048 is like a sliding puzzle game except the puzzle tiles are
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numbers instead of pictures. Instead of moving a single tile all
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tiles are moved simultaneously in the same direction. Where two
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tiles of the same number collide, they are reduced to one tile with
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the combined value. After every move a new tile is added with
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a starting value of 2.
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The goal is to create a tile of 2048 before all tile locations are
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occupied. Reaching the highest points score, which is the sum of all
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the tiles is a secondary goal. The game will automatically end when
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there are no more possible moves.
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Play consists of entering a direction to move. Directions can be entered
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using any of three different keyboard direction sets.
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```
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Direction | Keys
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----------|----------
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Up | w ^E 8
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Down | s ^X 2
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Left | a ^S 4
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Right | d ^D 6
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```
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The puzzle board is a 4x4 grid. At start, the grid will be populated
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with two 2 tiles. An example game sequence is shown below with new
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tiles to the game shown in brackets.
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```
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Start Move 1 - Up Move 2 - Left Move 3 - Left
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| | | |(2)| | | | | 4 | | 4 | | | | | 4 | | | |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| | | | | | | | | | | | | |(4)| | 4 | | | |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| | | |(2)| | | | | | | | | | | | | | | |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| | | | | | | |(2)| | | 2 | | | | | 2 | |(2)| |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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Move 4 - Left Move 5 - Up Move 6 - Right Move 7 - Up
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| 4 | | | | | 8 | | | 4 | | | | 8 | 4 | | | | 8 | 8 |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| 4 | | |(4)| | 4 | | | | | | | | 4 | | | | | 2 |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| | | | | | | | | | | | | | | | | | | |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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| 4 | | | | |(2)| | | | |(2)| | | 2 | |(2)| | | |
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+---+---+---+---+ +---+---+---+---+ +---+---+---+---+ +---+---+---+---+
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```
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This is how I lost this game:
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```
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+---+---+---+---+
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| 4 | 2 | 16| 4 |
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+---+---+---+---+
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| 32| 64| 8 | 2 |
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+---+---+---+---+
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| 4 | 8 |128| 32|
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+---+---+---+---+
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|(2)| 16| 8 | 4 |
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+---+---+---+---+
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```
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Press Q at any time to bring up the option to Quit or Restart the game.
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# Network Boot
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# ZModem Flash Update
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# ZModem Flash Update
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