Documentation Index
Fetch the complete documentation index at: https://mintlify.com/mihaip/infinite-mac/llms.txt
Use this file to discover all available pages before exploring further.
Infinite Mac supports a wide range of classic Macintosh and NeXT hardware models, each defined by a MachineDef object in the source. Every machine definition specifies which emulator core to use, what CPU is being emulated, which ROM image to load, available RAM configurations, and how the on-screen bezel should look. Some machines exist in multiple variants — for example, several 68K models are available under both the original Mini vMac emulator and the newer Snow emulator.
The MachineDef Type
Each machine is described by the MachineDef type, which extends EmulatorDef:
export type MachineDef = EmulatorDef & {
name: string;
cpu: EmulatorCpu;
speedGovernorTargetIPS?: number;
romPath: string;
gestaltID: number;
modifier?: "FDHD";
prefsPath: string;
fixedScreenSize?: {width: number; height: number};
supportedScreenSizes?: {
width: number;
height: number;
monitorId?: string;
}[];
mfsOnly?: boolean;
bezelStyle: "Beige" | "Platinum" | "Pinstripes" | "NeXT";
ramSizes: MachineDefRAMSize[]; // First value is the default
platform?: MachinePlatform;
extraFiles?: {[fileName: string]: string};
verboseBootEnvVars?: {[name: string]: string};
hasSCSI?: boolean;
isHidden?: boolean;
};
export type MachineDefRAMSize = `${number}M` | `${number}K`;
Key Fields Explained
ramSizes — An array of available RAM configurations (e.g. ["4M", "128M", "64M"]). The first entry is the default selection shown in the UI.
fixedScreenSize — When set, the machine uses exactly this one screen resolution and no other. Early compact Macs all use {width: 512, height: 342}.
supportedScreenSizes — An array of selectable resolutions for machines with video cards. Each entry may include a monitorId string used by DingusPPC to identify the monitor type. When neither field is set, the emulator uses the DEFAULT_SUPPORTED_SCREEN_SIZES list (1600×1200, 1280×1024, 1152×870, 1024×768, 800×600, 640×480).
mfsOnly — When true, the machine only supports the Macintosh File System (MFS) used by the original 128K and 512K Macs. HFS disks and the Infinite HD library are unavailable.
hasSCSI — When true on a Snow-emulated machine, enables the Infinite HD and Saved HD disk volumes.
speedGovernorTargetIPS — If specified, the emulator uses a software speed governor to target this instructions-per-second rate, approximating the original hardware speed (used for the Mac IIfx and Quadra 650).
gestaltID — The Macintosh Gestalt machine ID used by the OS to identify the hardware model.
modifier — Currently only "FDHD", indicates a machine variant with a high-density floppy drive.
export type MachinePlatform = "Macintosh" | "NeXT";
platform field and default to the Macintosh platform. NeXT machines explicitly set platform: "NeXT", which affects which disk images are shown in the browser.
Bezel Styles
The bezelStyle field controls the decorative frame drawn around the emulated screen:
| Value | Era | Examples |
|---|
"Beige" | 1984–1987 compact Macs | Mac 128K, Mac Plus |
"Platinum" | 1987–1998 modular Macs | Mac SE, Mac II, Quadra 650 |
"Pinstripes" | 1998+ iMac-era Macs | iMac G3, Power Mac G3 Blue & White |
"NeXT" | NeXT hardware | NeXT Computer, NeXTstation |
68K Macintosh — Mini vMac
These machines use the Mini vMac emulator. Mini vMac requires subtypes (EmulatorMinivMacSubtypes) to select the specific hardware variant.
| Name | CPU | Emulator Subtype | RAM Sizes | Screen |
|---|
| Mac 128K | 68000 | 128K | 128K | 512×342 (fixed) |
| Mac 512Ke | 68000 | 512Ke | 512K | 512×342 (fixed) |
| Mac Plus | 68000 | Plus | 4M | 512×342 (fixed) |
| Mac SE | 68000 | SE | 4M | 512×342 (fixed) |
| Mac II | 68020 | II | 8M | 640×480 (fixed) |
| Mac IIx | 68030 | IIx | 32M | 640×480 (fixed) |
The Mac 128K under Mini vMac sets mfsOnly: true — it can only load MFS-format floppy images and cannot use the Infinite HD library. The Infinite HD disk is delay-mounted after boot to work around a compatibility issue.
68K Macintosh — Snow
Snow is a newer Rust-based 68K emulator (see Emulator Types). The Snow variants of early Macs often support more RAM options and have SCSI support enabling the Infinite HD library.
| Name | CPU | RAM Sizes | Screen | hasSCSI |
|---|
| Mac 128K (Snow) | 68000 | 128K | 512×342 (fixed) | — |
| Mac 512K (Snow) | 68000 | 512K | 512×342 (fixed) | — |
| Mac 512Ke (Snow) | 68000 | 512K, 128K | 512×342 (fixed) | — |
| Mac Plus (Snow) | 68000 | 4M, 2M, 1M | 512×342 (fixed) | ✓ |
| Mac SE (Snow) | 68000 | 4M, 2M, 1M | 512×342 (fixed) | ✓ |
| Mac SE FDHD (Snow) | 68000 | 4M, 2M, 1M | 512×342 (fixed) | ✓ |
| Mac Classic (Snow) | 68000 | 4M, 2M, 1M | 512×342 (fixed) | ✓ |
| Mac II (Snow) | 68020 | 8M, 4M, 2M, 1M | 1152×870, 640×870, 640×480, 512×384 | ✓ |
| Mac II FDHD (Snow) | 68020 | 8M, 128M, 32M, 16M, 4M, 2M, 1M | 1152×870, 640×870, 640×480, 512×384 | ✓ |
| Mac IIx (Snow) | 68030 | 8M, 128M, 32M, 16M, 4M, 2M, 1M | 1152×870, 640×870, 640×480, 512×384 | ✓ |
| Mac IIcx (Snow) | 68030 | 8M, 128M, 32M, 16M, 4M, 2M, 1M | 1152×870, 640×870, 640×480, 512×384 | ✓ |
| Mac SE/30 (Snow) | 68030 | 8M, 128M, 32M, 16M, 4M, 2M, 1M | 512×342 (fixed) | ✓ |
mac-ii-display-card-8-24.rom for Mac II/IIx/IIcx variants and a se30-video.rom for the SE/30.
68K Macintosh — Basilisk II
The Basilisk II emulator handles the Mac IIfx and Quadra 650. Both use a speedGovernorTargetIPS to throttle emulation speed for realistic benchmark results.
| Name | CPU | Gestalt ID | RAM Sizes | Screen | Target IPS |
|---|
| Mac IIfx | 68030 | 13 | 128M, 64M, 32M, 16M, 8M, 4M | Default sizes | 4,000,000 |
| Quadra 650 | 68040 | 36 | 128M, 64M, 32M, 16M, 8M, 4M | Default sizes | 8,000,000 |
PowerPC Macintosh — DingusPPC
DingusPPC emulates early PowerPC Macs with OldWorld ROM (NuBus and PCI). These machines support multiple selectable screen resolutions via supportedScreenSizes with named monitorId values.
| Name | CPU | Gestalt ID | RAM Sizes | Screen Options |
|---|
| Power Macintosh 6100 | 601 | 67 | 136M, 72M, 40M, 24M, 12M, 8M | 832×624, 640×870, 640×480 |
| Power Macintosh 7200 | 601 | 108 | 16M, 32M, 64M, 128M, 256M | 1152×870, 832×624, 640×870, 640×480 |
| Power Macintosh 7500 | 601 | 68 | 16M, 32M, 64M, 128M, 256M | 1152×870, 832×624, 640×870, 640×480 |
| Power Macintosh G3 (Beige) | G3 | 510 | 256M, 128M, 64M, 32M | 1152×870, 1024×768, 832×624, 640×480 |
| iMac G3 (233 Mhz) | G3 | 406 | 128M, 64M, 32M, 256M, 512M, 1024M | 1152×870, 1024×768, 832×624, 640×480 |
verboseBootEnvVars for enabling verbose boot output when debug logs are requested.
PowerPC Macintosh — SheepShaver
SheepShaver emulates PowerPC Macs using NewWorld ROM (G3 Blue & White era and later). These machines use sheepShaverPrefsPath and support AppleTalk networking.
| Name | CPU | Gestalt ID | RAM Sizes | Bezel |
|---|
| Power Macintosh 9500 | 604 | 67 | 256M, 128M, 64M, 32M, 16M | Platinum |
| Power Macintosh G3 (Blue & White) | G3 | 406 | 256M, 128M, 64M | Pinstripes |
Mac OS X — PearPC
PearPC emulates a G4-class machine capable of running early Mac OS X releases. The CPU field is "G3" (the closest available type), but the machine is named as a G4.
| Name | CPU | Gestalt ID | RAM Sizes | Bezel |
|---|
| Power Macintosh G4 (PCI Graphics) | G3 | 406 | 256M, 128M, 64M, 32M | Pinstripes |
platform: "NeXT" and use bezelStyle: "NeXT" with a fixed screen size of 1120×832.
| Name | CPU | Subtype | Gestalt ID | RAM Sizes |
|---|
| NeXT Computer | 68030 | NeXT Computer | 0 (NEXT_CUBE030) | 64M, 32M, 16M |
| NeXTcube | 68040 | NeXTcube | 1 (NEXT_CUBE040) | 64M, 32M, 16M |
| NeXTstation | 68040 | NeXTstation | 2 (NEXT_STATION) | 32M, 16M |
| NeXTstation Turbo Color | 68040 | NeXTstation Turbo Color | 2 (NEXT_STATION) | 128M, 64M, 32M, 16M |
Hidden Machines
The Power Macintosh G3 (Blue & White) - Experimental machine (POWER_MACINTOSH_G3_BW_DPPC) sets isHidden: true. It is available via a direct URL but does not appear in the main machine browser. The source comment notes it is “not materially interesting (vs the other DingusPPC machines)” since the SheepShaver-based G3 Blue & White covers the same OS range more reliably.
The ALL_MACHINES Array
The complete ordered list exported from machines.ts:
export const ALL_MACHINES = [
MAC_128K, MAC_128K_SNOW, MAC_512K_SNOW, MAC_512KE, MAC_512KE_SNOW,
MAC_PLUS, MAC_PLUS_SNOW, MAC_SE, MAC_SE_SNOW, MAC_SE_FDHD_SNOW,
MAC_CLASSIC_SNOW, MAC_II, MAC_II_SNOW, MAC_II_FDHD_SNOW,
MAC_IIx, MAC_IIx_SNOW, MAC_IIcx_SNOW, MAC_SE30_SNOW,
MAC_IIFX, QUADRA_650,
POWER_MACINTOSH_6100, POWER_MACINTOSH_7200, POWER_MACINTOSH_7500,
POWER_MACINTOSH_9500, POWER_MACINTOSH_G3_BEIGE, IMAC_G3,
POWER_MACINTOSH_G3_BW_DPPC, POWER_MACINTOSH_G3_BW,
POWER_MACINTOSH_G4_PEARPC,
NEXT_COMPUTER, NEXT_CUBE, NEXT_STATION, NEXT_STATION_TURBO_COLOR,
];
MACHINES_BY_NAME, which is built from this array.
Infinite HD and Saved HD Availability
Two helper functions gate access to the shared disk libraries:
export function machineSupportsInfiniteHD(machine: MachineDef): boolean {
if (machine.emulatorType === "Snow") {
return machine.hasSCSI === true;
}
return true;
}
export function machineSupportsSavedHD(machine: MachineDef): boolean {
if (machine.emulatorType === "Snow") {
return machine.hasSCSI === true;
}
return !machine.mfsOnly;
}
hasSCSI: true for either library. Non-Snow machines always support the Infinite HD, but cannot use the Saved HD if mfsOnly is set (i.e. the Mac 128K).