Peritek VCD-V, User Manual

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Peritek
Programming On-board Devices and Memories 5-65
While there are general purpose serial I/O routines in the CnP Subroutine
Package, CnP has no knowledge of a mouse or keyboard. For the mouse,
you will have to take the 5 byte packets and convert them into cursor
motion on the screen. If you use an LK401 type keyboard with CnP, you
will have to generate a scan-code to ASCII translation table because the
LK401 is not ASCII (neither is a PC Keyboard).
CnP "test programs" exist in the /Board/progs directory which can be used
as examples for these tasks. Contact Peritek for more information.
Table 5-38 DUART Initialization Table
VMEbus
Relative
Typical Read/
Address Value(s) Write Mnemonic(s) Function
m+3 13,7 yes MR1A,MR2A Mode Register A
m+7 ---- Read SRA Status Register A
CC Write CSRA Clock Select Register A (38.4 Kbaud)
m+B ---- Read ---- Reserved-Read inhibited by hardware
15 Write CRA Command Register A
m+F Recv Data Read RHRA Receive Holding Register A
Xmit Data Write THRA Transmit Holding Register A
m+13 ---- Read IPCR Input Port Change Register
70 Write ACR Auxiliary Control Register
m+17 ---- Read ISR Interrupt Status Register
0 Write IMR Interrupt Mask Register
m+1B 0 yes CTUR Counter/Timer Register High
m+1F 2 yes CTLR Counter/Timer Register Low
m+23 13,7 yes MR1B,MR2B Mode Register B
m+27 ---- Read SRB Status Register B
CC Write CSRB Clock Select Register B (38.4 Kbaud)
m+2B ---- Read ---- Reserved-inhibited by hardware
15 Write CRB Command Register B
m+2F Recv Data Read RHRB Receive Holding Register B
Xmit Data Write THRB Transmit Holding Register B
m+33 ---- no ---- Reserved-inhibited by hardware
m+37 ---- NU ---- Not used on board
m+3B ---- Read ---- Read to start counter
m+3F ---- Read ---- Read to stop counter
Note: m = 100 for DUART A, m = 140 for DUART B