# NEW CARD LAYOUT V2.3 # **UPDATE: New layout added to jlcpcb in December order** **CAUTION! UNTESTED – WORK IN PROGRESS – UNDER CONSTRUCTION** ``` - Testing completed-V2.2, issues U3 (74HCT04) Pins 1 & 2 swapped , Pins 5 & 6 swapped... - Testing completed-V2.1. AFTER ISSUES REPAIRED, the card works GREAT using RomWBW code. See attachments for config info & PIC. - Testing using SC126 z180 Board (https://smallcomputercentral.wordpress.com/sc126-z180-motherboard-rc2014/) - See Attached for changes to ..\RomWBW\Source\HBIOS\Config\SCZ180_126.asm to add RC80-PROPIO support - PRP (RC80-PROPIO) default IO Base address is set to A8h - Edit ..\RomWBW\Source\HBIOS\prp.asm to change IO Base address (PRP_IOBASE .EQU $A8) ``` **Objective: Migrate the PropIO 2.01 board to RC2014 environment utilizing a "bus compatible" RC80 bus.** ``` The baseline "parent" design and the relevant Propeller Firmware can be found here: https://www.retrobrewcomputers.org/doku.php?id=boards:ecb:propio:start And the baseline "parent" design derives software support from here: https://www.retrobrewcomputers.org/doku.php?id=software:firmwareos:romwbw:start Many thanks to Wayne Warthen (PropIO 2.01) and the other original designers! **Thank-You Jim (trawlergeek) for migrating this board from Wayne Warthen original "ECB" RetroBrew Design** 2020/07/11 - created first attempt at routing the board. - It is crowded 100mm x 75mm so far. - Standard RC2014 is about 100 x 49. We are not constrained to that profile. - Have replaced 74682 with 74688. - Added USR RC80 pin support for Z280 support using additional address card. P4 High Address 1 Def - Jumper - 8Bit I/O 2 U5 For Use With 3 U6 16 / 24 / 32 Bit Address Decoder Card 4 U7 Still under development /WAIT 5 U1 For use with 6 U2 40 pin to provide /WAIT 7 U3 on U1 or U2 or U3 IEO-IEI Dasiy Chain 8 - Jumper to connect U4 & U8 ```