Srecord-1.20 is a very useful tool for manipulating various ASCII/HEX/BINARY files for creating EPROM images check http://srecord.sourceforge.net/ for the latest information.
Source: srecord-1.20.tar.gz
Documentation: srecord-1.20.pdf
Source: srecord-1.23.tar.gz
Documentation: srecord-1.23.pdf
RCASM is the assembler needed by several of the Makefiles to build the BIOS
Source Zip File: rcasm.tgz
Last Updated Mar. 08/2005
Board size 5.50 x 3.75
Bus Connector placement
Center location 0.2 x 1.875 (set Eagle grid to 0.025 to place connector and then restore to 0.05)
Restricted areas
Layer 41 and 42 place 3.00 x 0.15 polygons left and right bottom corners (next to bus connector) to prevent
traces from contacting card supports
LED Placement
Cathode (flat section) facing inward toward bus connector
5.2 (X axis) by
(y -axis)
0.3 Power – Label PWR 5.4 x .45
1.0 Aux 1 – Label xxx 5.4 x xxx
1.7 Aux 2
2.4 Aux 3
3.1 Aux 4
Eagle Library components
LED type 5MM
Resistors 207/7
Bypass capacitors C025-050×050
Tantalum capacitor placement .45 x 3.45 (+) closer to VCC
Board Labeling
NAME Label .05 x .05
FORMAT: KSR – XXX#-A
XXX = Board name
# = board design (different types of similar function)
A = Revision level
All slik screen writing on layer 25
PC Board Silk Screen uses layers 20, 21, 25
Verify Process
Do ERC Check
Verify GND and VCC Connected at bus
Verify unconnected input pins on pin list
Build Process
Run CAM JOBS
gerb274x.cam
Run Script
“doc”
!!!Update file names and order number inside readme file before uploading zip file for production!!!
Last Updated: November 09, 2005 09:48:34 PM
http://cottageworker.com/wp-content/uploads/2014/05/
The ELF/OS install menu, jumped to from the monitor section of the BIOS. BTW: the current video system only supports upper case characters.
http://cottageworker.com/wp-content/uploads/2014/05/
A running ELF/OS!
http://cottageworker.com/wp-content/uploads/2014/05/
A successful DIR command.
System-5 HBIOS (Hardware BIOS)
This code handles the video and keyboard I/O required by Mike’s BIOS (see below). Startup jumps to minimon section of BIOS.
Source: sec1.asm
Makefile: Makefile (assumes Mike’s BIOS is in subdirectory called orig_bios)
Changes required to Mike Riley’s BIOS (version 0.9)
Changes to BIOS are marked with conditional compilation using #DEFINE KSR
Source: bios.asm
Include: bios.inc
Makefile: Makefile
Changes required to Mike Riley’s BIOS (version 1.0.4)
Source: bios.asm
Include: bios.inc
Makefile: Makefile
Note: Makefiles require srecord utility – see the Tools Directory
Last Updated: November 09, 2005 09:48:34 PM
UNDER CONSTRUCTION
No version of this card exists yet
Description
The Front panel will uses TIL311 displays for address and Data, a sinlge LED for Q, 4 LEDS for mode (run,reset,load,wait). 8 switches for data input, 1 switch connected to an EF line, 4 push buttons connected to mode inputs, and a switch for input during load mode
Issues/todo log
| Date | Description | Status | |
Schematics, board layout, and operational description
| Revision | Production Date | Schematic | Layout | Operational Description |
Last Updated: November 09, 2005 09:48:34 PM
UNDER Development
No PCB has been produced yet
Description
The Solderless breadboard provides a platform for developing new circuits for SYSTEM-5.
Issues/todo log
| Date | Description | Status | |
| Mar. 8/2005 | Add decode logic for input and output | ||
Schematics, board layout, and operational description
| Revision | Production Date | Schematic | Layout | Operational Description |
| A | Under Development | proto1-a.sch | proto1-a.brd | Rev. A ops notes |
Last Updated: November 09, 2005 09:48:33 PM
http://cottageworker.com/wp-content/uploads/2014/05/
Rev. A of the IDE Interface card populated with a CF to IDE interface and 16MB CF card. Jumpers select the I/O ports for IDE control and data read/write.
Description
This design is borrowed directly from Mike Riley’s 8 bit IDE Interface. The only change is the addition of some jumper blocks to select I/O ports. This is required to support compatibility of some older software of my own that used the original ports.
Issues/todo log
| Date | Description | Status | |
Schematics, board layout, and operational description
| Revision | Production Date | Schematic | Layout | Operational Description |
| A | Feb. 11/2005 | ide1-a.sch | ide-a.brd | |
Last Updated: November 09, 2005 09:48:34 PM
http://cottageworker.com/wp-content/uploads/2014/05/
Rev. A of the 1861/Keyboard card. The card interfaces to a PS/2 keyboard and uses a standard 1861 setup to drive a composite monitor. Currently the 1861 circuit is untested. The connector at the bottom is from the CPU card and provides some signals required by the 1861 that are not on the standard bus. On System-4 the keyboard interface was contained on the CPU card.
Description
The board has several subsections: I/O decoding logic (borrowed from Mile Riley’s ELF), serial to parallel keyboard interface made of a PAK-VI and a PIC 16F84 processor, 1852 based parallel input port, and 1861 video circuit. Jumper blocks select I/O port used by keyboard and 1861. The PAK-VI chip at the top of the card is a PS/2 to ASCII decoder produced by AWC Electronics.
Issues/todo log
| Date | Description | Status | |
| Jan. 12/2005 | Test 1861 Circuit | ||
Schematics, board layout, and operational description
| Revision | Production Date | Schematic | Layout | Operational Description | PIC Code |
| A | Jan. 12/2005 | Video.sch | Video.brd | keyboard.c | |
Last Updated: November 09, 2005 09:48:34 PM
No PCB YET
REV. B not yet produced of the card the 6845 card. The top RCA connector is for composite video, the 9 pin connector provide video, horizontal drive, vertical drive for an Electrohome monitor. This card replaces System-4 video card.
Description
Issues/todo log
| Date | Description | Status | |
Schematics, board layout, and operational description
| Revision | Production Date | Schematic | Layout | Operational Description | Font EPROM |
| A | Feb. 15/2005 | v6845-a.sch | v6845-a.brd | ||
| B | In development *untested* | v6845-b.sch | v6845-b.brd |
Last Updated: November 09, 2005 09:48:34 PM
http://cottageworker.com/wp-content/uploads/2014/05/
REV. A of the card the 6845 card. The top RCA connector is for composite video, the 9 pin connector provide video, horizontal drive, vertical drive for an Electrohome monitor. This card replaces System-4 video card. This card is based on a design that appeared in BYTE Magazine May 1979.
Description
Issues/todo log
| Date | Description | Status | |
| Remove Divide 6 or 7 dot clock jumper | |||
| Add lower case character set | |||
| Remove divide by character clock 7490 and jumpers | |||
| Fix schematic 74163 and remove jumpers | |||
| Add DB9 pin connector to PCB | |||
| A11 Pin 21 of EPROM should be tied low not high | Fixed via double socket | Rev. A | |
Schematics, board layout, and operational description
| Revision | Production Date | Schematic | Layout | Operational Description | Font EPROM |
| A | Feb. 15/2005 | v6845-a.sch | v6845-a.brd | TBD | |
| B | In development *untested* | v6845-b.sch | v6845-b.brd |
TBD |
