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ECB-ModPrn is a board:
Changes from R02 to R03:
- replacement of DIP-switches to jumper
- some little correction (IC10 powering)
- optimization of the look-ahead-carry logic
Special thanks to Fabio Batagglia. His tests of R02 where an absolute great effort of this board and showed that the hardware is an runnable and usable design. Thank You so much!
The design of R03 will be published in the beginning of 2016 when I´m back from hospital. New testers and builders are warmly welcome!
J1 SIO/0 or DART port A
J2 SIO/0 or DART port B
SIO/0 or DART
Jumper S7 - RESET_SEL
Select reset input pin.
Jumper S1 + S2 - IO_SEL
Select board I/O address area.
Jumper S4 + S5 + S6 – INT_SEL (this is only an option)
Select INT-Source for CTC as interrupt controller
Jumper S3 – CLK-frequency for CTC to generate clock rate for communication
Configure clock source and frequency for communication
Disclaimer: I did my best to make sure that components listed in this BOM will be compatible with ECB-ModPrn board. Obviously I didn't order all of components listed here, and I was not able to actually verify that they will work. Please make sure to double check specifications on manufacturer's and seller's web site before ordering. Please let me know (or update the BOM) if you found any problems or incompatibilities.
Many components have multiple part numbers listed in BOM. There are some differences between various part numbers, such as:
If unsure what to order, read specifications on seller's and manufacturer's web sites. Also please read Replacement Notes below. Finally, consult people on N8VEM news group.
C1-10 100nF X7R
IC9 Z80 SIO/0 Z80 DART
J1, J2 M09D male connector SUBD-9
Q1 DIL14 2,4576MHz
R1-R5, R10, R11 1k
S1, S3, S6 DIP04YL S6 is an option
S2, S7 DIP02YL
S4 DIP06YL S4 is an option
S5 DIP08YL S5 is an option