EMUFAMI
Another NES Emulator for educational purpose. Written fully in Pascal, compatible with BP, FPC and TMT Pascal
- Active · last change 10-12-2026
- ★ 1 on GitHub
README
EMUFAMI v1.3
An educational NES emulator for DOS.
The whole emulator is written using plain, readable Pascal syntax: the 6502, the PPU, the APU and the mappers. Compatible with TMT Pascal 3.90, Free Pascal 3.2 (go32v2) or Borland Pascal 7.0 (16-bit protected mode). EMUFAMI requires a VGA adapter to run and it runs under VGA 256x240 or TEXT 640x480 video modes.
This is a part of a fully functional Pascal-based NES emulator running under DOS that is under development. The emulator is written completely from scratch, no external dependencies needed.
NOTE:
- The owners of TMT Pascal have removed the download of TMT Pascal 3.9 for DOS from their website. Alternate link: https://www.bttr-software.de/links//
- Free Pascal for DOS (go32v2) can be downloaded at: https://www.freepascal.org/down/i386/go32v2.html
- Borland Pascal 7.0 can be downloaded at https://winworldpc.com/product/borland-pascal/7x
- EMUFAMI currently supports eight mappers, keyboard control only and Sound Blaster, nothing else.
Screenshots
| GUI |
|---|
 |
| Super Mario Bros. | The Legend of Zelda | Contra |
|---|---|---|
 |
 |
 |
| Donkey Kong 3 | Galaga | Mappy |
|---|---|---|
 |
 |
 |
| Adventure Island | nestest | NEStress |
|---|---|---|
 |
 |
 |
Text mode
| Dig Dug | Mega Man |
|---|---|
| The Legend of Kage | Ninja Gaiden |
|---|---|
Running
FAMI_T Open ROM picker
FAMI_T ROM.NES launch ROM.NES, Esc quits to DOS
FAMI_T /TEXT games in VGA text modeFAMI_F and FAMI_B (the FPC and BP7 builds) take the same arguments.
Controls
| ROM picker | |
|---|---|
| Up, Down, PgUp, PgDn, Home, End | choose |
| A-Z | quick jump |
| Enter | open |
| Backspace | parent folder |
| F1 | short help |
| F2 | about |
| F3 | sound on/off |
| F4 | frames per second on/off |
| F6 | audio at 22 or 11 kHz |
| Esc | quit |
| In-game | Pad 1 | Pad 2 |
|---|---|---|
| D-pad | arrows | W S A D |
| A | X | H |
| B | Z | G |
| Select | Right Shift | T |
| Start | Enter | Y |
P pauses, F1 resets, F5 switches between VGA and text mode, Esc closes active ROM.
A game's battery RAM is kept in NAME.SAV beside NAME.NES. There are no save states.
System Requirements
- CPU: I'm not sure about this. Tested under DOSBox-Staging and DOSBox-X only.
At DOSBox-Staging's default speed for protected mode (60000 cycles), Super Mario Bros. runs at about 48 frames per second (TMT build), 56 (FPC) and 33 (BP7); with
cycles = maxall three reach the full 60. - Video: VGA only, tweaked mode 256x240 @ 60 Hz, or text mode at 640x480 @ 60 Hz.
- Sound: Sound Blaster (1.x, 2.0, Pro, 16, AWE).
- Memory: 4 MB.
Mappers
| No. | Board | No. | Board |
|---|---|---|---|
| 0 | NROM | 1 | MMC1 |
| 2 | UxROM | 3 | CNROM |
| 4 | MMC3 | 7 | AxROM |
| 11 | Color Dreams | 66 | GxROM |
Supports NTSC, PAL timings.
Building
MAKE all three below
MAKE tmt BIN\FAMI_T.EXE (TMT Pascal)
MAKE fpc BIN\FAMI_F.EXE (Free Pascal - go32v2)
MAKE bp BIN\FAMI_B.EXE (Borland Pascal 7.0 - protected mode)
MAKE clean clean all binaries and intermediate files for a fresh build.
BUILD all three from scratchTo specify your Pascal compiler use the following example: MAKE -DBPC=D:\BP\BIN\BPC.EXE bp (also TMTPC, FPC). The BP7 build needs RTM.EXE and DPMI16BI.OVL (from BP7's BIN folder) beside it or on the PATH.
The emulator has small footprints. TMT-compiled binary is about 91KB (92,922 bytes), the FPC one is roughly 98KB (99,840 bytes) and the BP7 one about 98KB (100,608 bytes).
ROMs
nestest.nes: kevtris's nestest, which checks the CPU's instructions, official and unofficial. Run it, press Start, and read the screen.nestress.nes: FluBBa's NEStress, with PPU, sound, CPU and controller tests and a stress test of them all.
Both belong to their corresponding owners. No other ROMs included.
TODOs
- Support more mappers.
- Improve the GUI.
by Trinh D.D. Nguyen, 2026.