Apple 32: A STM32F103VET6 implemented Apple I emulator with ChatGPT and WiFi support

Software Mode

• Apple I emulator
• Apple I emulator with ChatGPT support
  • Directly use the onboard esp8266 Wifi to connect to ChatGPT API

STM32 Onboard Key Functions

• K1: EMULATOR ROOT TERMINAL
• K2: TURBO MODE

Video Output Methods

• VGA
• Serial (Both to GPU and UART output)

Hardware

• STM32F103VET6 (Emulating 6502 CPU)
  • 64KB SDRAM
  • Onboard esp8266 Wifi for ChatGPT support
• NodeMCU-12E board (Emulating 6551 ACIA, aka the GPU)
  • 128KB SDRAM
  • Retro style, e.g. Scanlines, CRT effect
• PS/2 keyboard
• VGA monitor
• SD Card (For loading ROMs)
• Onboard Buzzer
• 3D printed case

Hardware Connection

• STM32F103VET6 <- UART & GPIO (Enable) -> NodeMCU-12E < - VGA -> VGA Monitor
• STM32F103VET6 <- PS/2 -> PS/2 Keyboard
• STM32F103VET6 <- SDIO -> SD Card
• STM32F103VET6 <- UART -> Onboard esp8266 Wifi (ChatGPT Server)
• STM32F103VET6 <- UART -> Serial Monitor (PC / ChatGPT Proxy)
• STM32F103VET6 <- GPIO -> Buzzer

Memory Map (0x0000 - 0xFFFF) (64KB)

• 0x0000 - 0x8000: RAM
• 0xD010 - 0xD012: PIA
• 0xE000 - 0xEFFF: BASIC ROM
• 0xFF00 - 0xFFFF: Woz Monitor ROM

Progress

• STM32 6502 Emulation (Debug with UART, Testing with loading Apple 1 ROMs)
• Order VGA wire, VGA supported monitor and a PS/2 keyboard.
• PS/2 Input test and implement to STM32 as input device.
• NodeMCU GPU Emulation (Have some library, easier than 6502 Emulation)
• VGA testing with whole system
• Implement ChatGPT API via onboard esp8266
• Make boot screen looks pro
• SDIO for custom ROMs loading (maybe, depend on time)