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実機資料誤字解決済み修正済み2009-01-28 12:242009-02-03 02:40
 
テスターchowell担当者doxソースkopunch.cpp
バージョン0.129u2発生バージョン修正バージョン0.129u3
フラグ
セット kopunch
セット詳細
kopunch - KOパンチ
 
概 要メインCPUはZ80ではなく、8080。
詳 細The source code for the kopunch.c driver specifies the CPU as:
	MDRV_CPU_ADD("main", 8080, 4000000)	/* 4 MHz ???? uses 8080 instructions, not z80 */


However, the pcbinfo file for the board says:
 Main CPU : Z80
 Xtal : 4.000 Mhz


A 4 MHz clock speed would certainly imply a Z80, since no 8080 versions were ever rated faster than 3 MHz.

If the CPU used was a Z80, especially with a 4 MHz clock speed, the driver should say so. There's no problem in remarking that only 8080 instructions are used, but that doesn't mean that the CPU should be treated as an 8080. It's more likely that the game code was ported from existing 8080 code or written by someone only familiar with the 8080, and that the Z80 chip was chosen because it could run faster while still being backward-compatible (and possibly for other features, such as its built-in DRAM refresh or a lower price).
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