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.TH NINTENDO 1
.SH NAME
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gb, nes, snes \- emulators
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.SH SYNOPSIS
.B games/gb
[
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.B -23a
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]
.I romfile
.br
.B games/nes
[
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.B -23aos
]
.I romfile
.br
.B games/snes
[
.B -23ahmsT
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]
.I romfile
.SH DESCRIPTION
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.I Gb,
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.I nes
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and
.I snes
are emulators for the Nintendo Game Boy, Nintendo Entertainment System (NES) and Super Nintendo Entertainment System (SNES).
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They execute the romfile given as an argument.
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The \fBz\fR, \fBx\fR, \fBa\fR, \fBs\fR, return and shift keys correspond to B, A, Y, X, Start and Select, respectively.
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Other keys:
.TP
F5
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Save the current state in \fBgb.save\fR / \fBnes.save\fR / \fBsnes.save\fR.
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.TP
F6
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Load the current state from \fBgb.save\fR / \fBnes.save\fR / \fBsnes.save\fR.
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.TP
Esc
Pause the emulator.
.TP
Del
Exit the emulator.
.PP
Command line options:
.TP
.B -2 -3
Scale the screen by the given factor.
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.TP
.B -a
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Enable audio output.
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.PP
.B nes
options:
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.TP
.B -o
Hide the top and bottom eight pixels (overscan area), like a real television would.
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.TP
.B -s
Save contents of battery backed SRAM (used by some games for savegames) as a file (\fIgb\fR and \fIsnes\fR automatically detect if this is needed).
.PP
.B snes
options:
.TP
.B -h
Override HiROM/LoROM detection:
.B -h
sets LoROM,
.B -hh
sets HiROM.
.TP
.B -m
Enable mouse emulation using system mouse. Mouse button 1 (left button) engages the SNES left mouse button. Mouse button 3 (right button) engages the SNES right mouse button. Holding down mouse button 2 (middle button) disengages the SNES mouse entirely so that the Plan 9 cursor offset can be adjusted to align with the SNES cursor.
.TP
.B -T
Display percentage of how fast the system is running relative to a real SNES.
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.SH SOURCE
.B /sys/src/games/gb
.br
.B /sys/src/games/nes
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.br
.B /sys/src/games/snes
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.SH BUGS
You bet!
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.br
SRAM saving on the NES only functions when the
.B -s
option is used.
.br
The SNES horizontal hires mode is supported only with
.B -2
scaling.
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.SH HISTORY
.I Gb
first appeared in 9front (April, 2012).
.br
.I Nes
first appeared in 9front (February, 2014).
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.br
.I Snes
first appeared in 9front (March, 2014).
