Difference between revisions of "Raspberry Pi Pico MM BASIC Build"
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[[Raspberry Pi Pico MM BASIC Build]] | [[Raspberry Pi Pico MM BASIC Build]] | ||
Revision as of 16:18, 24 May 2022
Raspberry Pi Pico MM BASIC Build
- Runs PicoMite (MaxiMite) BASIC (VGA, PS/2)
- Uses Land Boards cards
Contents
OPTION (Configuration)
- List options
OPTION LIST
- Setup options
OPTION KEYBOARD US OPTION SDCARD GP13, GP10, GP11, GP12 OPTION AUDIO GP6, GP7 OPTION COLOURCODE ON
- Clear OPTIONS with
OPTION RESET
Raspberry Pi Pico in a Small Plastic Project Box
VGAX49
- VGAX49
- Resistors Values
- Selected for 0.7V output on analog RGB pins
- R12 = 270
- R6 = 390
- R7 = 820
- R1 = 270
R,B | G RES | G | |||
---|---|---|---|---|---|
Rs | 75 | R1 | 390 | 75 | |
Rm | 270 | R2 | 820 | 264.298 | |
Vin | 3.3 | RM | 264.298 | 3.3 | |
Vout | 0.717 | 0.729 | |||
I (mA) | 9.57 | I (mA) | 9.73 |
PS2X49
- PS2X49
- PWR1 is the power to the PS/2 #1, #2 connectors (5V)
- +3.3V powers the TXS0104 translator
- Routing
- CLK1, DAT1 on J3 go to J1 (Purple)
- CLK2, DAT2 on J3 go to J2 (Not used)
SD CARD X49
- SD CARD X49
- Install NO5V jumper
- Connect 3.3V power
- No 5V attached
- No U2 voltage regulator needed
GRID49 - Audio Filter
- GRID49
- Audio filter circuit
- C1 = Audio_In-L
- D1 - GND
- E1 - Audio_In-R
Cabling
FUNCTION | GP | PICO PIN | CARD | SIG | PIN | COLOUR |
---|---|---|---|---|---|---|
I2C1GND | GND | 3 | MCP23017 | |||
AUDIO-GND | GND | 8 | GRID49 | AUD-GND | D1 | BLK |
AUDIO-L | GP6 | 9 | GRID49 | AUD-L | C1 | VIO |
AUDIO-R | GP7 | 10 | GRID49 | AUD-R | E1 | YEL |
PS2_CLK | GP8 | 11 | PS2X49 | CLK1 | 6 | VIO |
PS2_DATA | GP9 | 12 | PS2X49 | DAT1 | 8 | YEL |
PS2_GND | GND | 13 | PS2X49 | GND | 10 | BLK |
SD_SCK | GP10 | 14 | SD_CARD_X49 | SCLK | 3 | VIO |
SD_MOSI | GP11 | 15 | SD_CARD_X49 | MOSI | 4 | BLU |
SD_MISO | GP12 | 16 | SD_CARD_X49 | MISO | 2 | YEL |
SD_SLVSEL | GP13 | 17 | SD_CARD_X49 | -SDCS | 5 | GRY |
SD_GND | GND | 18 | SD_CARD_X49 | GND | 1 | BLK |
I2C1_SDA | GP14 | 19 | MCP23017 | SDA | YEL | |
I2C1_SCL | GP15 | 20 | MCP23017 | SCL | WHT | |
VGA_HSYNC | GP16 | 21 | VGA | HS | 17 | GRY |
VGA_VSYNC | GP17 | 22 | VGA | VS | 18 | WHT |
VGA_GND | GND | 23 | VGA | GND | 19 | BRN |
VGA_BLU | GP18 | 24 | VGA | B4 | 12 | BLU |
VGA_GRN_LO | GP19 | 25 | VGA | G4 | 7 | GRN |
VGA_GRN_HI | GP20 | 26 | VGA | G5 | 6 | GRN |
VGA_RED | GP21 | 27 | VGA | R4 | 1 | ORG |
PS2_5V | VSYS | 39 | PS2X49 | PWR1 | 2 | ORG |
PS2_3.3V | 3.3V | BUS | PS2X49 | 3.3V | 4 | RED |
SD_3.3V | 3.3V | BUS | SD_CARD_X49 | 3.3V | 7 | RED |