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author | Cowering <cowering@users.noreply.github.com> | 2016-03-21 12:43:29 -0500 |
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committer | Cowering <cowering@users.noreply.github.com> | 2016-03-21 12:44:02 -0500 |
commit | 8179e313e588329aa1230ae04f3352e5111506ef (patch) | |
tree | c934b870d164fffa464be783c88dbf6f58b2a9be /src/devices/bus | |
parent | 13e8e27678d668f4deef10038114b0c27d3ce35f (diff) |
another tiny doc update for A7800 (NW)
Diffstat (limited to 'src/devices/bus')
-rw-r--r-- | src/devices/bus/a7800/a78_slot.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/devices/bus/a7800/a78_slot.cpp b/src/devices/bus/a7800/a78_slot.cpp index 65b32272820..825c0a6f5fd 100644 --- a/src/devices/bus/a7800/a78_slot.cpp +++ b/src/devices/bus/a7800/a78_slot.cpp @@ -707,6 +707,7 @@ WRITE8_MEMBER(a78_cart_slot_device::write_40xx) [*] Cart type: + (byte 54) bit 0-7 - Hardware "flags" bit 0 [0x01] - POKEY at $4000 bit 1 [0x02] - SuperCart bank switched @@ -715,11 +716,11 @@ WRITE8_MEMBER(a78_cart_slot_device::write_40xx) bit 4 [0x10] - bank 6 at $4000 bit 5 [0x20] - banked RAM at $4000 bit 6 [0x40] - POKEY at $0450 + bit 7 [0x80] - currently unused - bit 8-15 - Special values - 0 = Normal cart // normal compared to what? perhaps this should be 'unused' - 1 = Absolute (F18 Hornet) - 2 = Activision (Double Dragon & Rampage) + (byte 53) + bit0 set = Absolute mapper (F18 Hornet) + bit1 set = Activision mapper (Double Dragon & Rampage) -------------------------------------------------*/ |