Msg: 898 *Conference*
11-11-91 23:25:49
From: TRACY ALLEN
To : TIM MIHULKA
Subj: REPLY TO MSG #885 (8085 MACHINE LANG.)
Dear Tim, That's right, RIM=20h and SIM=30h. Also, if you can use them, the 80C85 recognises the "undocumented" 8080 op codes, LHLI=EDh SHLI=D9h HLMBC=08h as well as the two-byte shifts. If you want to program additional stuff into the "bonus" space in your TS-DOS ROM (the bonus space is a feature, not a drawback!) You can also use the CSR adrs psuedo-op to get from the option ROM to standard ROM and back. All the Travelling ROMs (I think) use that pseudo-op. It is coded as RST6 adrs. -- Tracy (Nerdvanna huh?!)