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@ -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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Wayne Warthen
4 years ago
GitHub