osiemu - Mac
osiemu - Mac
osiemu - Mac
File Size:
10.15 MB
Version:
0.9.2
Author:
GitHub
Date:
14 November 2024
Downloads:
1 x
Ohio Scientific Instruments, Inc. Emulator for Linux, Windows, and macOS
Features
NMOS 6502 CPU
Selectable CPU speed, including "warp speed"
40kB RAM, or 48kB RAM without BASIC (Model 522)
Model 555 extra RAM at $d000 (4kB) and/or $e000 (4kB) for video-less systems
8kB BASIC ROM
Up to 4kB OS/Monitor ROM
Polled keyboard, Model 542 or Model 600 mode, raw or cooked
ASCII keyboard, Model 440B
Two joysticks (d-pad or analog)
64x32, 64x16, and 32x32 character based display
Switchable ASCII font and graphics font
Color modes:
Monochrome white, green, amber, or bluish
Model 440B, 6-bit ASCII, 4 colors
Model 540B, 8 colors, inverse video
Model 630 Color Video Expander, 8 colors, inverse video
2019 RGBI Board with 630 interface, 16 colors RGBI, 8 dimmed, 8 bright
High resolution overlays:
Model 440B, 128x128
Model 541, 256x256, High Resolution Graphics Expander
Serial tape ACIA with selectable baudrate and memory location
Bit-level floppy emulation, Model 470/505/610, up to four single sided 5¼" (40 or 80 tracks) or 8" (77 tracks) drives
Hardware accelerated display
full resolution 512x256
configurable frame rate
optional 2x, 3x, or 4x zoom
optional TV aspect ratio 16:9 or 4:3
optional anti-aliasing
optional scan lines or dots
Sound modes:
Model 542B/C keyboard tone generator and 8-bit DAC
Superboard II/Model 600/C1P keyboard 8-bit DAC
On-Screen Display during peripheral access
Built-in monitor, dump/change memory contents, registers, set breakpoints, CPU and stack tracing, disassembler, heatmap, manage tapes and drives
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