Ant32

CPU overclocked from (1x) 150Mhz (1.1v) to (2x) 300Mhz (1.2v), possibly to (3x) 460Mhz (1.5v) – other have driven the RP2350B to over 600Mhz (2v).

The Ant32 is a reconfigurable 32-bit RISC-V computer.

Four Atari/Sega DP-9 joypad ports.

USB keyboard/mouse connector.

GPIO	Function	GPIO	Function
0	TX0 – eventually NFC TX	29	SPI1 CSn LCD
1	RX0 – eventually NFC RX	30	SticKey SWD CLK
2	BEEP	31	SticKey SWD IO
3	NEOPIXEL	32	LCD TOUCH INTERRUPT
4	TX1 ESP-C6 GPIO 17 (RX)	33	LCD CMD/DATA
5	RX1 ESP-C6 GPIO 16 (TX)	34	SticKey, LCD, TOUCH RESET
6	CLOCK INTERRUPT	35	SticKey interrupt
7	ESP-C6 AUTOLOAD GPIO 9	36	SPI0 RX/MISO - JTAG TDI to Superchip
8	CS – 8MB PS RAM	37	SPI0 CSn - JTAG TMS
9	SPI1 CSn ESP-C6 GPIO 23	38	SPI0 SCK - JTAG TCK
10	ESP-C6 EN	39	SPI0 TX/MOSI - JTAG TDO
11	ESP-C6 HANDSHAKE GPIO 21	40	Superchip reconfig
12	HSTX HDMI D0-	41	SPI1 CSn SDCARD
13	HSTX HDMI D0+	42	SDA1 Superchip slave
14	HSTX HDMI CK-	43	SCL1 Superchip slave
15	HSTX HDMI CK+	44	Superchip done
16	HSTX HDMI D2-	45	SPI1 CSn - Superchip
17	HSTX HDMI D2+	46	Superchip Pixel clock
18	HSTX HDMI D1-	47	Superchip FRAM
19	HSTX HDMI D1+	SWDIO	ESP-C6 GPIO 10
20	SDA0 – Clock / Touch / Cart / Controllers	SWDCLK	ESP-C6 GPIO 11
21	SCL0 – Clock / Touch / Cart / Controllers	ADCREF
22	Superchip VSync interrupt	3V3
23	Superchip HSync interrupt	BOOTSEL	Unbrick
24	CART CD	USB D-	Keyboard, mouse, joypad
25	SPI1 CSn - CART	USB D+
26	SPI1 SCK ESP-C6 GPIO 23	RUN	Hardware reset button to 3v3
27	SPI1 TX ESP-C6 GPIO 18	3V3 EN
28	SPI1 RX ESP-C6 GPIO 20	VBUS

Personality cartridge port

A 24-pin edge connector cartridge port (37mm 2.54 pitch wide) is connected to the Ant32. If present, then this is booted in preference to the SD card slot. If a cart is inserted or swapped whilst powered on, the Ant32 will normally automatically be rebooted to it (this can be disabled in options). However, a cartridge can safely be removed whilst powered on and the Ant32 will not reboot, reinserting the same cartridge will also not reboot.

0	1	2	3	4	5	6	7	8	9	10	11
GND	TX	3.3V	SCL	CS	TX/MOSI	RX/MISO	CLK	SDA	CD	RX	GND
GND	RX	CD	SDA	CLK	RX/MISO	TX/MOSI	CS	SCL	3.3V	TX	GND
12	13	14	15	16	17	18	19	20	21	22	23

A special NFC "Card cartridge" will have an NFC reader and slot, with an MicroSD card slot for game "cache". The NFC card can have the web location or ID of the game and unique serial number, it could transfer the data and do future loads from the Micro SD in the card slot.

USB host for keyboard, mouse, joypad.

An ESP-C6-WROOM-1 chip will be connected to the Ant32. This will bring 2.4Ghz Wifi (802.11b/g/n/ax), Thread 1.3, Zigbee 3.0 and Bluetooth 5.3 (LE) and Bluetooth mesh, with RGB status light, Remote "debrick".

The clock chip is the DS3231, the prototype uses a Raspberry Pi DS3231 clock “module”. From left to right (from above, chip at bottom) 3v3, SDA, SCL, NC, GND. The NC connection has been patched so it’s actually connected to pin 3 of the DS3231 (the INT pin).

Antibrick built-in:

The ESP32 can unbrick the Ant32 remotely over wifi or via USB-C.