[PULL 72/72] docs/system/ppc/amigang.rst: Update for NVRAM emulation

[Nicholas Piggin <npiggin@gmail.com>]

From: BALATON Zoltan <balaton@eik.bme.hu>

Add NVRAM and hint on how to make it persistent. Also update Linux
boot section which should now boot automatically with the new NVRAM
defaults so manual settings in menu may not be needed normally.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Message-ID: <20250304205926.87E364E6010@zero.eik.bme.hu>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 docs/system/ppc/amigang.rst | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/docs/system/ppc/amigang.rst b/docs/system/ppc/amigang.rst
index e2c9cb74b7..21bb14ed09 100644
--- a/docs/system/ppc/amigang.rst
+++ b/docs/system/ppc/amigang.rst
@@ -21,6 +21,7 @@ Emulated devices
  * VIA VT82C686B south bridge
  * PCI VGA compatible card (guests may need other card instead)
  * PS/2 keyboard and mouse
+ * 4 KiB NVRAM (use ``-drive if=mtd,format=raw,file=nvram.bin`` to keep contents persistent)
 
 Firmware
 --------
@@ -54,14 +55,14 @@ To boot the system run:
                     -cdrom "A1 Linux Net Installer.iso" \
                     -device ati-vga,model=rv100,romfile=VGABIOS-lgpl-latest.bin
 
-From the firmware menu that appears select ``Boot sequence`` →
-``Amiga Multiboot Options`` and set ``Boot device 1`` to
-``Onboard VIA IDE CDROM``. Then hit escape until the main screen appears again,
-hit escape once more and from the exit menu that appears select either
-``Save settings and exit`` or ``Use settings for this session only``. It may
-take a long time loading the kernel into memory but eventually it boots and the
-installer becomes visible. The ``ati-vga`` RV100 emulation is not
-complete yet so only frame buffer works, DRM and 3D is not available.
+If a firmware menu appears, select ``Boot sequence`` → ``Amiga Multiboot Options``
+and set ``Boot device 1`` to ``Onboard VIA IDE CDROM``. Then hit escape until
+the main screen appears again, hit escape once more and from the exit menu that
+appears select either ``Save settings and exit`` or ``Use settings for this
+session only``. It may take a long time loading the kernel into memory but
+eventually it boots and the installer becomes visible. The ``ati-vga`` RV100
+emulation is not complete yet so only frame buffer works, DRM and 3D is not
+available.
 
 Genesi/bPlan Pegasos II (``pegasos2``)
 ======================================
-- 
2.47.1