From c67bcb4b553fca88b9a12816e5e4ea8c836d8f5b Mon Sep 17 00:00:00 2001 From: hap Date: Thu, 29 Sep 2022 13:21:34 +0200 Subject: chess/tasc: remove wrong note --- src/mame/chess/tasc.cpp | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/src/mame/chess/tasc.cpp b/src/mame/chess/tasc.cpp index 9f0c985d13c..2501ac53a51 100644 --- a/src/mame/chess/tasc.cpp +++ b/src/mame/chess/tasc.cpp @@ -8,13 +8,12 @@ Commonly known as Tasc R30, it's basically a dedicated ChessMachine. The King chess engines are also compatible with Tasc's The ChessMachine software on PC, however the prototype Gideon 3.1(internally: 2.1, Rebel 2.01) is not. -WARNING: Don't configure more than 512KB RAM for R30 The King 2.50, it will still -be playable but will actually use less than 512KB RAM and become weaker. - The King 2.23 version was not sold to consumers. It has an opening book meant for chesscomputer competitions. For more information, see: http://chesseval.com/ChessEvalJournal/R30v223.htm +Gideon only uses 128KB program RAM, no matter the RAM configuration. + R30 hardware notes: - ARM6 CPU(P60ARM/CG) @ 30MHz - 256KB system ROM (2*27C010) @@ -30,13 +29,7 @@ R40 hardware notes: Documentation for the Toshiba chips is hard to find, but similar chips exist: T7778 is equivalent to T6A39, T7900 is equivalent to T6A40. -EPROMs are interchangeable between R30 and R40, with some limitations with -The King 2.50 (see below). - -Regarding RAM: The King 2.2x will work fine with RAM expanded up to 8MB. -The King 2.50 appears to be protected against RAM upgrades though, and will -limit itself to 128KB if it detects a non-default amount of RAM. Gideon doesn't -use RAM above 128KB either, perhaps the R30 prototype only had 128KB RAM. +EPROMs are interchangeable between R30 and R40. references: - https://www.schach-computer.info/wiki/index.php?title=Tasc_R30 @@ -54,6 +47,10 @@ TODO: sound pitch is correct now though - does the R40 version have the same clock divider value? +BTANB: +- R40 calls itself "R30" on the system information screen (there is a photo of + an R40 that does say "R40", but it appears to be a modified ROM) + ******************************************************************************/ #include "emu.h" -- cgit v1.2.3