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The Ikon(tm) host adapter hardware registers are sometimes used as the basis of driver or application software development. How are these commonly used? Compatibility is quite important for those users whose experience or applications include Ikon style operations.
What is the hardware register format? The following is a brief summary of the hardware registers on an Ikon model 10111 host adapter card for the ISA bus. Presumably, other host adapter cards have a very similar interface. The upper case mnemonics are those which may have some applicability in the Gypsy interface. The lower case mnemonics probably are not useful in the Gypsy interface.
Bit positions ----> 07 06 05 04 03 02 01 00 Reg 0, R/W, Latched tenb tvry LRST dmon dstr ienb VSPP VPLT Reg 1, W, Pulse funct. sack MCLR rint REST VCLR VTFF VEOT VLTR Reg 1, R, IF Status DIRY DVRY iflg word wsap tsel fplt test Reg 2, W, Prog. Out pot7 pot6 pot5 pot4 pot3 pot2 pot1 pot0 Reg 2, R, Diag. In din7 din6 din5 din4 din3 din2 din1 din0 Reg 3, R, Dev Stat. pls2 psl1 psl0 VRDY cbsy pmty ONLN cflt Reg 4, R, IF Strap term dsl2 dsl1 dsl0 isl3 isl2 isl1 isl0 Reg 6, R/W, Mode .... oddc sinh levl zenb dmaz intz renb LRST Latched device reset VSPP Versatec simul. print/plot VPLT Versatec plot mode MCLR Master clear interface only REST Device reset only VCLR Versatec clear VTFF Versatec form feed VEOT Versatec EOT VLTR Versatec line terminate DIRY Device and interface ready DVRY Device ready VRDY Versatec READY asserted ONLN Device online or selected
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