Z80CPM vs Breadbin

RomWBW CP/M brings the classic CP/M operating system to your iPhone, iPad, and Mac with a full Z80 processor emulator. FEATURES • Full Z80 Emulation - Accurate instruction emulation runs authentic CP/M software • VT100 Terminal - ANSI escape sequence support for text adventures and productivity apps • Multiple Disk Support - Mount up to 4 disk images simultaneously • Download Disk Images - Fetch CP/M disk images directly from the RomWBW project • Works Offline - Downloaded disk images are stored locally • Native Mac Support - Runs natively on macOS via Mac Catalyst CLASSIC SOFTWARE Run the software that defined personal computing: • Operating Systems: CP/M 2.2, CP/M 3, ZSDOS, NZCOM, ZPM3 • Word Processing: WordStar • Programming: Turbo Pascal, Microsoft BASIC • Text Adventures: Zork, Adventure, Hitchhiker's Guide to the Galaxy • Databases: dBASE II • And thousands more CP/M programs GETTING STARTED 1. Open Settings and download a disk image (CP/M 2.2 recommended) 2. Select the disk image for Unit 0 3. Press Play to start the emulator 4. Press 0 at the boot menu to boot from disk BUILT ON ROMWBW This emulator is built on the RomWBW HBIOS platform, the same firmware used by real retro Z80 hardware projects. Disk images are downloaded from the official RomWBW project and include freely distributable CP/M software. TECHNICAL DETAILS • 80x25 character terminal display • hd1k disk format (8MB per slice, 64MB per disk) • Hardware keyboard support • Portrait and landscape orientation Perfect for retrocomputing enthusiasts, computer history education, or anyone who wants to experience the operating system that launched the personal computer revolution.

Breadbin is a Commodore 64 emulator for iPhone, iPad and Mac — written from scratch in Swift, every chip built from the original hardware documentation. Not a port, and not a wrapper around somebody else's emulator, original code from the first cycle to the last. YOU BRING THE ROMS Breadbin ships clean — no ROM images and no games, because they are not ours to give away. On first launch the app lists the three system files the machine needs (KERNAL, BASIC, character generator), shows which ones it has found, and imports them with a tap from the Files app. Dump them from hardware you own, or use freely licensed replacement ROMs — either way you are a minute from a READY prompt. Your files stay on your device. ACCURACY YOU CAN CHECK • Cycle-accurate 6510 processor — undocumented opcodes, NMOS decimal mode, per-cycle bus behaviour. Passes Klaus Dormann's 6502 functional test suite, the standard the emulator community measures against. • Cycle-based VIC-II video — bad lines, sprite DMA, the border unit, all eight graphics modes, raster interrupts. Raster-timing demos behave the way they should. • A real 1541 drive — its own processor, its own VIA chips, a rotating GCR bitstream with byte-ready wired exactly as the hardware does it. Fastloaders and copy-protected disks work here instead of hanging. • Both SID sound revisions, 6581 and 8580, built from the datasheet — including the mixer quirk that makes 4-bit sample playback audible on the 6581. DIAL A BULLETIN BOARD Breadbin carries an emulated SwiftLink modem bridged to the internet. Run a terminal program, pick a board from your phone book, and you are logged into a live BBS over TCP — telnet negotiation handled for you, PETSCII intact. The boards are still out there, and still busy. Your phone book is a plain text file you edit yourself. BUILT FOR THE DEVICE IN YOUR HAND • A touch keyboard laid out like the real machine, with national keycaps for Sweden/Finland, Denmark/Norway and Germany • On-screen joystick — analog stick or D-pad, placed where your thumb actually is, with autofire • 1351 proportional mouse — a trackpad on touch screens, a captured pointer on the Mac • Save states with thumbnails, so you can put the machine down mid-level • Display filters from razor-sharp pixels to a softened CRT look, with an adjustable border • Instant loading when you want it, true drive speed when the software demands it • Loads .prg, .d64, .g64, .t64, .p00 and .crt cartridge files • One purchase covers iPhone, iPad and Mac PAY ONCE, PLAY FOREVER No ads. No subscriptions. No in-app purchases. No account. And no data collection: no analytics, no tracking — nothing is collected, so there is nothing to sell, share or leak. The only network traffic Breadbin ever makes is the bulletin board you tell it to dial. Breadbin is not affiliated with, authorised by, or endorsed by the owners of the Commodore or Commodore 64 trademarks. It ships no Commodore software.