bar/c64.go

// C64 control via Ultimate 1541 II(+) API calls
//
// See U1541's official docs for details
// https://1541u-documentation.readthedocs.io/en/latest/api/api_calls.html

package main

import (
	"fmt"
	"log"
	"net/url"
	"strconv"

	"github.com/hypebeast/go-osc/osc"
)

// Your C64 controller structure
type C64 struct {
	u1541_host string
}

// Reset (warm start) your C64 via U1541
func (c64 *C64) reset(msg *osc.Message) {
	if _, err := put(c64.u1541_host + "/v1/machine:reset"); err != nil {
		log.Print(err)
	}
}

// Reboot a C64 and U1541 cartridge
func (c64 *C64) reboot(msg *osc.Message) {
	if _, err := put(c64.u1541_host + "/v1/machine:reboot"); err != nil {
		log.Print(err)
	}
}

// Run PRG from U1541
// String in OSC message is your PRG file path on Ultimate cart
func (c64 *C64) runPRG(msg *osc.Message) {
	params := url.Values{}
	params.Add("file", getOSC[string](msg))
	if _, err := put(c64.u1541_host + "/v1/runners:run_prg?" + params.Encode()); err != nil {
		log.Print(err)
	}
}

// Mount disk image on an U1541 emulating disk insertion to 1541 floppy drive
// String in OSC message is your disk image file
func (c64 *C64) insertDisk(msg *osc.Message) {
	params := url.Values{}
	params.Add("image", getOSC[string](msg))
	if _, err := put(c64.u1541_host + "/v1/drives/a:mount?" + params.Encode()); err != nil {
		log.Print(err)
	}
}

// Play SID file
// String in OSC message is a path
// If there is int in a OSC message use it as song number
func (c64 *C64) sidplay(msg *osc.Message) {
	params := url.Values{}
	params.Add("file", getOSC[string](msg))
	if songnr := getOSC[int](msg); songnr != 0 {
		params.Add("songnr", strconv.Itoa(songnr))
	}
	if _, err := put(c64.u1541_host + "/v1/runners:sidplay?" + params.Encode()); err != nil {
		log.Print(err)
	}
}

// Send key strokes via Keyboardcache
func (c64 *C64) sendKeys(msg *osc.Message) {
	// Load buffer
	for _, char := range getOSC[string](msg) {
		params := url.Values{}
		params.Add("address", "277")
		params.Add("data", fmt.Sprintf("%02x", char))
		log.Printf("sent %02x", char)
		if _, err := put(c64.u1541_host + "/v1/machine:writemem?" + params.Encode()); err != nil {
			log.Print(err)
			return
		}

		params = url.Values{}
		params.Add("address", "c6")
		params.Add("data", "01")
		if _, err := put(c64.u1541_host + "/v1/machine:writemem?" + params.Encode()); err != nil {
			log.Print(err)
			return
		}
	}
}