Create ROM Applications.md

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Source/Doc/ROM Applications.md

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+!include(Common.inc)
+!def(document)(ROM Applications)
+---
+title: !product !document
+author: !author (mailto:!authmail)
+date: !date
+institution: !orgname
+documentclass: article
+toc: true
+toc-depth: 1
+classoption:
+ - oneside
+papersize: letter
+geometry:
+ - top=1.5in
+ - bottom=1.5in
+ - left=1.5in
+ - right=1.5in
+# - showframe
+linestretch: 1.25
+colorlinks: true
+fontfamily: helvet
+fontsize: 12pt
+header-includes:
+ - |
+   ```{=latex}
+   \renewcommand*{\familydefault}{\sfdefault}
+   ```
+---
+
+`\clearpage  % new page after TOC`{=latex}
+
+# Summary
+
+RomWBW includes a small selection of built in utilities and
+programming languages.
+
+`\clearpage`{=latex}
+
+#ROMWBW Monitor
+
+The Monitor program is a low level utility that can be used 
+for testing and programming. It allows programs to be entered,
+memory to be examined, and input/output devices to be read or
+written to.
+
+It's key advantage is that is available at boot up.
+
+A quick guide to using the Monitor program follows:
+
+##? - Displays a summary of available commands.
+
+`Monitor Commands (all values in hex):`
+`B                - Boot system`
+`D xxxx yyyy      - Dump memory from xxxx to yyyy`
+`F xxxx yyyy zz   - Fill memory from xxxx to yyyy with zz`
+`H                - Halt system`
+`I xxxx           - Input from port xxxx`
+`K                - Keyboard echo`
+`L                - Load Intel hex data`
+`M xxxx yyyy zzzz - Move memory block xxxx-yyyy to zzzz`
+`O xxxx yy        - Output value yy to port xxxx`
+`P xxxx           - Program RAM at address xxxx`
+`R xxxx           - Run code at address xxxx`
+`S xx             - Set bank to xx`
+`X                - Exit monitor`
+
+##Cold Boot
+
+B - Performs a cold boot of the ROMWBW system. A complete
+reinitialization of the system is performed and the system
+returns to the Boot Loader prompt.
+
+##Dump Memory
+
+D xxxx yyyy - Dump memory from hex location xxxx to yyyy
+on the screen as lines of 16 hexadecimal bytes with their
+ASCII equivalents (if within a set range, else a '.' is
+printed). A good tool to see where code is located, check
+for version id, obtain details for chip configurations and
+execution paths.
+
+Examples: D 100 1FF
+
+0100: 10 0B 01 5A 33 45 4E 56 01 00 00 2A 06 00 F9 11  ...Z3ENV...*..ù.
+0110: DE 38 37 ED 52 4D 44 0B 6B 62 13 36 00 ED B0 21  Þ87íRMD.kb.6.í°!
+0120: 7D 32 E5 21 80 00 4E 23 06 00 09 36 00 21 81 00  }2å!..N#...6.!..
+0130: E5 CD 6C 1F C1 C1 E5 2A C9 8C E5 CD 45 05 E5 CD  åÍl.ÁÁå*É.åÍE.åÍ
+0140: 59 1F C3 00 00 C3 AE 01 C3 51 04 C3 4C 02 C3 57  Y.Ã..î.ÃQ.ÃL.ÃW
+0150: 02 C3 64 02 C3 75 02 C3 88 02 C3 B2 03 C3 0D 04  .Ãd.Ãu.Ã..ò.Ã..
+0160: C3 19 04 C3 22 04 C3 2A 04 C3 35 04 C3 40 04 C3  Ã..Ã".Ã*.Ã5.Ã@.Ã
+0170: 48 04 C3 50 04 C3 50 04 C3 50 04 C3 8F 02 C3 93  H.ÃP.ÃP.ÃP.Ã..Ã.
+0180: 02 C3 94 02 C3 95 02 C3 85 04 C3 C7 04 C3 D1 01  .Ã..Ã..Ã..ÃÇ.ÃÑ.
+0190: C3 48 02 C3 E7 04 C3 56 03 C3 D0 01 C3 D0 01 C3  ÃH.Ãç.ÃV.ÃÐ.ÃÐ.Ã
+01A0: D0 01 C3 D0 01 C3 D0 01 C3 D0 01 01 02 01 CD 6B  Ð.ÃÐ.ÃÐ.ÃÐ....Ík
+01B0: 04 54 68 69 73 20 66 75 6E 63 74 69 6F 6E 20 6E  .This function n
+01C0: 6F 74 20 73 75 70 70 6F 72 74 65 64 2E 0D 0A 00  ot supported....
+01D0: C9 3E FF 32 3C 00 3A 5D 00 FE 20 28 14 D6 30 32  É>ÿ2<.:].þ (.Ö02
+01E0: AB 01 32 AD 01 3A 5E 00 FE 20 28 05 D6 30 32 AC  «.2­.:^.þ (.Ö02¬
+01F0: 01 C5 01 F0 F8 CF E5 26 00 0E 0A CD 39 02 7D 3C  .Å.ðøÏå&...Í9.}<
+
+##Fill Memory
+
+F xxxx yyyy zz - Fill memory from hex xxxx to yyyy with
+a single value of zz over the full range. The Dump command
+can be used to confirm that the Fill completed as expected. A
+good way to zero out memory areas before writing machine data
+for debug purposes.
+
+## Halt System
+
+H - Halt system. A Z80 HALT instruction is executed. The
+system remains in the halt state until the system is
+physically rebooted. Interrupts will not restart the
+system. On systems that support a HALT status LED, the
+LED will be illuminated.
+
+## Input from port
+
+I xxxx - Input data from port xxxx and display to the screen.
+This command is used to read values from hardware I/O ports
+and display the contents in hexadecimal. 
+
+## Keyboard Echo
+
+K - Echo any key-presses from the terminal. Press 'ESC' key
+to quit. This facility provides that any key stroke sent to
+the computer will be echoed back to the terminal. File down
+loads will be echoed as well while this facility is ‘on’.
+
+## Load Hex format file into memory
+
+L - Load a Intel Hex format file via the terminal program.
+The terminal emulator program should be configured to
+give a delay at the end of each line to allow the monitor
+enough time to parse the line and move the data to memory.
+Keep in mind that this will be a transient unless the
+system support backed memory. Saving to memory drive is
+not supported.
+
+## Move memory
+
+M xxxx yyyy zzzz - Move hex memory block xxxx to yyyy to
+memory starting at hex location zzzz. Care should be taken
+to insure that there is enough memory at the destination so
+that code does not get over-written or memory wrapped around.
+
+## Output to port
+
+O xxxx yy - Output data byte xx to port xxxx. This command is
+used to send hexadecimal values to hardware I/O ports to
+verify their operation and is the companion to the I operation.
+Use clip leaded LEDs to confirm the data written.
+
+## Program memory location
+
+P xxxx - Program memory location xxxx. This routine will
+allow you to program a hexidecimal into memory starting
+at location xxxx. Press 'Enter' on a blank line to
+return to the Monitor prompt.
+
+##NOTES:
+
+The Monitor allows access to all memory locations. ROM and
+Flash memory cannot be written to. Memory outside the normal
+address range can be accessed using the B command. Page 0 
+(first 256 bytes) is critical for the HBIOS operation.
+Changing banks may make this inforrmation inaccessible.
+
+The RTC utility on the CP/M ROM disk provides facilities
+to manipulate the Real Time Clock non-volatile Memory. 
+Use the C or Z option from the Boot Loader to load CP/M 
+and then run RTC to see the options list.
+
+#FORTH
+
+#BASIC
+
+#TastyBASIC
+
+#Play a Game
+
+#Network Boot
+
+#ZModem Flash Update