3 gb, gba, nes, snes \- emulators
56 are emulators for the Nintendo Game Boy and Game Boy Color (GB and GBC), Nintendo Game Boy Advance (GBA), Nintendo Entertainment System (NES), and Super Nintendo Entertainment System (SNES).
57 They execute the romfile given as an argument.
58 The \fBz\fR, \fBx\fR, \fBa\fR, \fBs\fR, \fBq\fR, \fBw, \fRreturn and shift keys correspond to B, A, Y, X, L1, L2, Start and Select, respectively.
62 Pause the emulator. If already paused it will step one video frame.
65 Save the current state in \fBgb.save\fR / \fBgba.save\fR / \fBnes.save\fR / \fBsnes.save\fR.
68 Load the current state from \fBgb.save\fR / \fBgba.save\fR / \fBnes.save\fR / \fBsnes.save\fR.
71 Toggle the emulator's speedometer. It shows in the upper left,
72 off-viewport corner, the ratio between the expected and observed time it
73 took to draw 60 frames.
76 Toggle tracing of the emulator.
79 It uncaps the 60fps frame rate and lets emulation go as fast as possible.
93 Scale the screen to a given factor regardless of the window's size.
99 Run GBC roms in GBC mode and DMG (GB) roms in GBC's DMG compatibility mode.
102 Run GB roms in DMG mode. GBC-only roms will not run in this mode; others will run only in black & white.
104 .BI -C nnnnnn,nnnnnn,nnnnnn,nnnnnn
105 Select a color palette. Has no effect on roms in color mode. The syntax is of the form -C ffffff,aaaaaa,555555,000000 (using HTML style rrggbb notation).
111 Location of the GBA BIOS file (required to operate the emulator). Default is \fB/sys/games/lib/gbabios.bin\fR.
114 Save format used by the original game. Valid formats are: eeprom4, eeprom64, sram256, flash512, flash1024. The number corresponds to the size, in kilobits, of the save file. By default, the emulator attempts to automatically detect the save format, but does not always succeed.
120 Hide the top and bottom eight pixels (overscan area), like a real television would.
123 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).
129 Override HiROM/LoROM detection:
136 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.
140 .B /sys/src/games/gba
142 .B /sys/src/games/nes
144 .B /sys/src/games/snes
148 SRAM saving on the NES only functions when the
152 The SNES horizontal hires mode is supported only with
156 All emulators assume a North American (i.e. NTSC) system. PAL games (and in some cases Japanese games) are not supported.
159 first appeared in 9front (April, 2012).
162 first appeared in 9front (September, 2014).
165 first appeared in 9front (February, 2014).
168 first appeared in 9front (March, 2014).