land-boards.comAdded subroutines for UART and VDU initialization to the IOP16 code. Also, added an ANSI screen clear command (0x0c). Here's a handy ANSI codes chart.
Here's the IOP16 code (latest version is here).
000 START 0xA017 JSR INITVDU INITIALIZE THE VDU 001 0xA01C JSR INITURT INITIALIZE THE ACIA UART 002 0xA014 JSR CLRSCR CLEAR THE SCREEN CMD 003 LOOP 0xA006 JSR KB2PDP KEYBOARD TO PDP-8 004 0xA00D JSR PDP2VDU PDP-8 TO VGA 005 0xE003 JMP LOOP LOOP FOREVER 006 KB2PDP 0x6004 IOR Reg0 IO_04 READ KBD STATUS 007 0x8001 ARI Reg0 0X01 MASK RX DATA PRESENT BIT 008 0xC004 BEZ NOKDBD NO KBD DATA 009 0x6105 IOR Reg1 IO_05 READ KBD DATA 00a 0x9180 ORI Reg1 0X80 MARK PARITY 00b 0x7101 IOW Reg1 IO_01 WRITE TO UART DATA 00c NOKDBD 0xB000 RTS DONE KEYBOARD TO UART 00d PDP2VDU 0x6000 IOR Reg0 IO_00 PDP-11 TO VDU 00e 0x8001 ARI Reg0 0X01 MASK RX DATA PRESENT BIT 00f 0xC004 BEZ NOPDPD NO UART DATA 010 0x6101 IOR Reg1 IO_01 READ UART DATA 011 0x817F ARI Reg1 0X7F 8 TO 7 BITS 012 0x7103 IOW Reg1 IO_03 WRITE OUT SCREEN 013 NOPDPD 0xB000 RTS DONE UART TO VGA 014 CLRSCR 0x200C LRI Reg0 0X0C SCREEN CLEAR 015 0x7003 IOW Reg0 IO_03 WRITE OUT SCREEN 016 0xB000 RTS 017 INITVDU 0x2003 LRI Reg0 0X03 RESET TERMINAL COMMAND 018 0x7002 IOW Reg0 IO_02 WRITE VDU CMD REG 019 0x2020 LRI Reg0 0X20 TX CTRLS RTS 01a 0x7002 IOW Reg0 IO_02 WRITE VDU CMD REG 01b 0xB000 RTS 01c INITURT 0x2003 LRI Reg0 0X03 RESET UART COMMAND 01d 0x7000 IOW Reg0 IO_00 WRITE UART CMD REG 01e 0x2020 LRI Reg0 0X20 TX CTRLS RTS 01f 0x7000 IOW Reg0 IO_00 WRITE UART CMD REG 020 0xB000 RTS
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