diff options
Diffstat (limited to 'src/mame/drivers/fidel_cc10.cpp')
-rw-r--r-- | src/mame/drivers/fidel_cc10.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/mame/drivers/fidel_cc10.cpp b/src/mame/drivers/fidel_cc10.cpp index 9b51cb23b34..128332a5001 100644 --- a/src/mame/drivers/fidel_cc10.cpp +++ b/src/mame/drivers/fidel_cc10.cpp @@ -13,14 +13,12 @@ TODO: Fidelity Chess Challenger 10 (CCX) ------------------- -4 versions are known to exist: A,B,C,D. Strangely, version C(UCC10) has an 8080 -instead of Z80. Chess Challenger 1,3 and 7 also run on very similar hardware. +3 versions are known to exist: A,B,C. Strangely, version C(UCC10) has an 8080 +instead of Z80 and no beeper, it's on CC1-based hardware. Z80A CPU @ 4MHz, NEC D8255C 4KB ROM(NEC 2332A), 2*256 bytes RAM(4*NEC 2111AL-4) - The beeper is via a 556 timer, fixed-frequency at around 1300-1400Hz. -Not all hardware configurations include the beeper. Checker Challenger 4 (ACR) is on the same PCB, twice less RAM and the beeper gone. |