3b1emu / changelog

merge in changes from default branch experimental_memory_mapper_v2

• Fri, 18 Jan 2013 22:52:43 +0000
• by Philip Pemberton <philpem@philpem.me.uk> [Fri, 18 Jan 2013 22:52:43 +0000] rev 132
• merge in changes from default branch

add TODO

• Fri, 18 Jan 2013 18:51:50 +0000
• by Philip Pemberton <philpem@philpem.me.uk> [Fri, 18 Jan 2013 18:51:50 +0000] rev 131
• add TODO

[wd2010] disable DMA pagefault workaround (no longer required)

• Fri, 18 Jan 2013 17:20:07 +0000
• by Philip Pemberton <philpem@philpem.me.uk> [Fri, 18 Jan 2013 17:20:07 +0000] rev 130
• [wd2010] disable DMA pagefault workaround (no longer required)

[memory] Emulate main memory read wrap-around

• Fri, 18 Jan 2013 17:18:50 +0000
• by Philip Pemberton <philpem@philpem.me.uk> [Fri, 18 Jan 2013 17:18:50 +0000] rev 129
• [memory] Emulate main memory read wrap-around
  
  3B1s with 512K or 1MB of base memory have a decoding quirk which causes reads
  to 'wrap around'. That is to say, on a 512K machine, reading from addresses 0,
  512K, 1024K or 1536K will address the same RAM byte. On a 1MB machine,
  addresses 0 and 1024K address the same RAM byte.
  
  Emulating this incorrectly causes P4TEST to report an incorrect amount of
  available base RAM.

experimental memory mapper, not quite working experimental_memory_mapper_v2

• Fri, 18 Jan 2013 17:03:48 +0000
• by Philip Pemberton <philpem@philpem.me.uk> [Fri, 18 Jan 2013 17:03:48 +0000] rev 128
• experimental memory mapper, not quite working