Difference between revisions of "Schach RAM"
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| − | Schach RAM is a two-kilobyte block of extra [[RAM]] used in cartridge #20, [[ | + | Schach RAM is a two-kilobyte block of extra [[RAM]] used in cartridge #20, [[Disassembly:SABA_Videoplay_20|Schach (Chess)]] for the [[Saba Videoplay]]. This consists of four 2114 chips (1K x 4 bits), and it starts at memory location $2800, and ends at $2FFF. This RAM is different than using the [[register]]s or [[VRAM]], because it can be access directly in memory using the [[data counter]]. |
| − | Since most homebrew | + | Since most homebrew carts with extra RAM uses the Schach cartridges layout it's also emulated in MESS and modern homebrews can safely use it. |
Latest revision as of 15:55, 12 April 2022
Schach RAM is a two-kilobyte block of extra RAM used in cartridge #20, Schach (Chess) for the Saba Videoplay. This consists of four 2114 chips (1K x 4 bits), and it starts at memory location $2800, and ends at $2FFF. This RAM is different than using the registers or VRAM, because it can be access directly in memory using the data counter.
Since most homebrew carts with extra RAM uses the Schach cartridges layout it's also emulated in MESS and modern homebrews can safely use it.
