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+.. _PowerPC-System-emulator:
+
+PowerPC System emulator
+-----------------------
+
+Use the executable ``qemu-system-ppc`` to simulate a complete 40P (PREP)
+or PowerMac PowerPC system.
+
+QEMU emulates the following PowerMac peripherals:
+
+-  UniNorth or Grackle PCI Bridge
+
+-  PCI VGA compatible card with VESA Bochs Extensions
+
+-  2 PMAC IDE interfaces with hard disk and CD-ROM support
+
+-  NE2000 PCI adapters
+
+-  Non Volatile RAM
+
+-  VIA-CUDA with ADB keyboard and mouse.
+
+QEMU emulates the following 40P (PREP) peripherals:
+
+-  PCI Bridge
+
+-  PCI VGA compatible card with VESA Bochs Extensions
+
+-  2 IDE interfaces with hard disk and CD-ROM support
+
+-  Floppy disk
+
+-  PCnet network adapters
+
+-  Serial port
+
+-  PREP Non Volatile RAM
+
+-  PC compatible keyboard and mouse.
+
+Since version 0.9.1, QEMU uses OpenBIOS https://www.openbios.org/ for
+the g3beige and mac99 PowerMac and the 40p machines. OpenBIOS is a free
+(GPL v2) portable firmware implementation. The goal is to implement a
+100% IEEE 1275-1994 (referred to as Open Firmware) compliant firmware.
+
+The following options are specific to the PowerPC emulation:
+
+``-g WxH[xDEPTH]``
+   Set the initial VGA graphic mode. The default is 800x600x32.
+
+``-prom-env string``
+   Set OpenBIOS variables in NVRAM, for example:
+
+   ::
+
+      qemu-system-ppc -prom-env 'auto-boot?=false' \
+       -prom-env 'boot-device=hd:2,\yaboot' \
+       -prom-env 'boot-args=conf=hd:2,\yaboot.conf'
+
+More information is available at
+http://perso.magic.fr/l_indien/qemu-ppc/.