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docs/Altair8800/README.md
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@ -1,12 +1,15 @@
Altair8800_Mister
=================
![alt text](./images/Altair8800_MiSTer.png)
By Fred VanEijk and Cyril Venditti.
## What is an Altair 8800
https://en.wikipedia.org/wiki/Altair_8800
<https://en.wikipedia.org/wiki/Altair_8800>
## How to control the MiSTer Altair8800
- To move the cursor use the directional arrow keys (Left – Right – Up – Down).
- Toggle switches
@ -15,7 +18,6 @@ https://en.wikipedia.org/wiki/Altair_8800
- STOP/RUN
- 1 key - On - up
- 2 or 0 key - Off - down
- Momentary switches
- SINGLE STEP
@ -30,7 +32,8 @@ https://en.wikipedia.org/wiki/Altair_8800
- PROTECT
- AUX
## Available samples
## Available samples
These samples are accessible through the MiSTer Core OSD (F12) in the "Select Program" section.
- Empty
@ -40,6 +43,8 @@ These samples are accessible through the MiSTer Core OSD (F12) in the "Select Pr
- zeroToseven
256 bytes of memory with 1st 8 bytes as 0 to 7.
First press the RESET toggle, then you can use the EXAMINE NEXT to step through
the data in memory. You will see the values 0 to 7 as binary on the data LEDs.
- KillBits
@ -47,94 +52,128 @@ These samples are accessible through the MiSTer Core OSD (F12) in the "Select Pr
Object: Kill the rotating bit. If you miss the lit bit, another bit turns on leaving two bits to destroy.
Quickly toggle the switch, don't leave the switch in the up position.
Before starting, make sure all the switches are in the down position.
see: rtl\roms\altair\killbits.txt
- SIOEcho (See Serial port section)
256 bytes to test serial port at port 00/01.
Just echos the character typed on the terminal.
see: rtl\roms\altair\SIOEcho.txt
- StatusLights
Demonstrate status light combinations.
Halts the cpu when done so requires a reset of the core.
Single Step this one.
see: rtl\roms\altair\StatusLights.txt
- Basic4k32 (see Serial port section)
This is the basic interpreter originally created by Bill Gates and Paul Allen.
Basic interpreter in 4k ram at 0x0000 with a total of 8k of memory including the interpreter.
Comumicates with serial port requires SENSE swithes to be set to 0xFD.
this is the basic interpreter originally created by Bill Gates and Paul Allen.
Communication with the serial port requires SENSE swithes to be set to 0xFD.
The Basic4k32 require the serial port to be setup and the sense switches to be set this way:
- 15 to 10 ON
- 9 OFF
- 8 ON
The Basic4k32 requires the serial port to be setup to interact with it on a serial terminal.
The sense switches to be set as follows (note the sense switches are the switches below the upper 8 address LEDs).
Basic will not start properly unless the sense switches are set as follows:
- 15 to 10 ON
- 9 OFF
- 8 ON
The sense switches control some aspects of initializing the serial port on the Altair8800.
## Altair operation
http://altairclone.com/altair_experience.htm
<https://altairclone.com/altair_experience.htm>
## OSD explanation
MiSTer Core OSD (F12) :
MiSTer Core OSD (F12 or OSD button) :
- “Select Program”
See Available samples section.
- “Load Program”
- Do this switch sequence:
- Turn the ON/OFF switch to ON
- Insure that the STOP/RUN switch is STOP
- Load a program by using the "Select Program" option then press "Load Program".
Once you press "Load Program" the Core will place that program in memory.
- Finally do:
- RESET with the RESET/CLR switch
- Turn the STOP/RUN switch to RUN
- “Enable TurnMon”
Do this switch sequence to run a progrm:
- Turn the ON/OFF switch to ON
- Insure that the STOP/RUN switch is STOP
- Load a program by using the "Select Program" option then press "Load Program".
Once you press "Load Program" the Core will place that program in memory.
Finally do:
- RESET with the RESET/CLR switch
- Turn the STOP/RUN switch to RUN alternatively use SINGLE STEP
- “Enable TurnMon"
Makes available the turn key monitor at address 0xFD00.
See file "Altair8800_Mister/core/roms/altair/turnmon.txt".
See file "rtl\roms\altair\turnmon.txt".
- “Reset”
- “Reset”
This will reset the core.
This will reset the core. Note this is not the same as RESET on the fron panel (which sets the program counter to 0).
- “Help”
This will show this document on the Mister display. Note this option is on the System OSD display.
## Serial port
- To use the serial port you need to have an I/O Board v5.5 or do a hardware Wiring:
- Any USB to 3.3V (NOT 5.5V) TTL Serial Cable Adapter should work.
We have implemented a serial port as part of the Altair8800 core. To use it you need to have an I/O Board v5.5 or later with a USER I/O port. If you do not have this I/O board you can wire directly to the DE10-Nano.
Without the I/O board:
- Any USB to 3.3V (NOT 5.5V) TTL Serial Cable Adapter should work.
- TX of the TTL Serial Cable Adapter -> SCL Arduino_IO15 pin of the DE-10.
- RX of the TTL Serial Cable Adapter -> SDA Arduino_IO14 pin of the DE-10.
- Don't forget to wire the Ground.
- Use Putty or TeraTerm for client and use the 19200 baud setting.
With the I/O board:
The User Port (which looks like a USB 3.1A connector) is documented here: <https://github.com/MiSTer-devel/Wiki_MiSTer/wiki/emu---Top-Level-of-a-MiSTer-core>
- Any USB to 3.3V (NOT 5.5V) TTL Serial Cable Adapter should work.
- TX of the TTL Serial Cable Adapter -> RX/SCL/D+ pin 3 of the User Port.
- RX of the TTL Serial Cable Adapter -> TX/SDA/D- pin 2 of the User Port.
- Don't forget to wire the Ground -> GND pin 4 of the User Port.
Use Putty or TeraTerm as a client and use the 19200 baud setting at 8 bits and no parity (this is required to run the Basic4k32 example).
This cable should work fine.
<https://a.co/d/dMlEKn4>
with this USB 3.0 adapter
<https://a.co/d/1VpqE5a>
![alt text](./images/DE-10_Serial.png)
## Credits
- Inspiration for displaying the Altair8800 front panel:
- Inspiration for displaying the Altair8800 front panel:
<https://timetoexplore.net/blog/arty-fpga-vga-verilog-01>
- Altair8800 front panel image:
<http://www.vintage-computer.com/altair8800.shtml>
https://timetoexplore.net/blog/arty-fpga-vga-verilog-01
- Altair8800 front panel image:
http://www.vintage-computer.com/altair8800.shtml
- Core:
https://github.com/1801BM1/vm80a
- Core:
<https://github.com/1801BM1/vm80a>
https://zeptobars.com/en/read/KR580VM80A-intel-i8080-verilog-reverse-engineering
<https://zeptobars.com/en/read/KR580VM80A-intel-i8080-verilog-reverse-engineering>
https://hackaday.com/2015/03/07/looking-inside-the-kr580vm80a-soviet-i8080-clone/
<https://hackaday.com/2015/03/07/looking-inside-the-kr580vm80a-soviet-i8080-clone/>
https://jeelabs.org/2016/09/i-never-had-an-intel-8080/
<https://jeelabs.org/2016/09/i-never-had-an-intel-8080/>
https://github.com/mmicko/s100fpga
<https://github.com/mmicko/s100fpga>
## Known issues
Depending on your monitor resolution the Altair8800 front panel might not be complete or centered.
## Not implemented
The following switches/functions are not implemented:
- CLR
- PROTECT
- AUX
- CLR
- PROTECT
- AUX

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docs/GAMEBOY2P/ReadMe.md
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@ -22,10 +22,17 @@ Saves created contain savegames for both players.
For compatibility, all saves are 256Kbyte in size, 128 KByte for each player.
Saves can be copied from singleplayer, but only player 1 will have a savegame then.
Saves can be copied from singleplayer, but only player 1 will have a savegame then. "Dupe Save to GB 2" option can be used to load singleplayer savegames for both players.
Saves can be copied to singleplayer, but when saved in singleplayer, the second player savegame is lost.
# Loading different games
The option "Rom for second GB" can be used to load two different games. First load the game for Player 1 with the option off, then activate the option and load another game for player 2. Both GBs will reset on loading the second game.
Loading the game for player 2 with both "Rom for second GB" and "Dupe Save to GB 2" options enabled can be used to load a singleplayer save for player 2 only.
Saving when playing two different roms will create a combined savegame with the gamename of the second loaded game, which can be loaded again with the same load order next time.
# Video Output
Output resolution is 320x144 pixel, which both screen placed next to each other horizontally.

8
docs/MultiComp/README.md
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@ -17,10 +17,10 @@ For convenience you can use the Multicomp FPGA - CP/M Demo Disk from Obsolescenc
http://obsolescence.wixsite.com/obsolescence/multicomp-fpga-cpm-demo-disk
After you have flash the CP/M Demo Disk to the SD Card you will have to use the secondary SD Card on the MiSTer on I/O Board:
https://github.com/MiSTer-devel/Main_MiSTer/wiki/IO-Board
https://github.com/MiSTer-devel/Wiki_MiSTer/wiki/IO-Board
Using CP/M - from Grant Searle website:
http://searle.hostei.com/grant/Multicomp/cpm/fpgaCPM.html#UsingTheMachine
http://searle.x10host.com/Multicomp/cpm/fpgaCPM.html
## Z80 Basic:
SGN, INT, ABS ,USR, FRE, INP, POS, SQR, RND ,LOG, EXP, COS, SIN, TAN, ATN, PEEK ,DEEK ,LEN, STR$, VAL ,ASC, CHR$ ,LEFT$,
@ -46,7 +46,7 @@ CONT, LIST, CLEAR, NEW, EXEC, TAB, TO, SUB, THEN, NOT, STEP, +, -, *, /, ^, AND,
TROFF, EDIT, SGN, INT, ABS, USR, RND, SIN, PEEK, LEN, STR$, VAL, ASC, CHR$, LEFT$, RIGHT$, MID$, INKEY$, MEM, ATN, COS, TAN, EXP, FIX,
LOG, SQR, HEX$, VARPTR, INSTR, STRING$, MID$ (MODIFICATION), POS
http://searle.hostei.com/grant/Multicomp/#BASICKeywords
http://searle.x10host.com/Multicomp/#BASICKeywords
## License
@ -65,7 +65,7 @@ arom this page must be made available free of charge.
Grant Searle
## URL
[Grant's MULTICOMP pick and mix computer](http://searle.hostei.com/grant/Multicomp/index.html)
[Grant's MULTICOMP pick and mix computer](http://searle.x10host.com/Multicomp/)
## Note
The 6809 Basic is not resetting properly. This issue is present in the original Grant Searle's MultiComp project