Elf 2000

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This page contains user contributed documentation for the Elf 2000 and associated peripherals, including

The information on this page is supplemental and is not a substitute for reading the Elf 2000 User's Manual.


Contents

Announcements

Elf2000 Disk/UART/RTC STG1861 Combination PCB

The combination PC boards have arrived and all orders excepting the international ones have been shipped. Internation orders require me to stand in line at the Post Office, so that'll have to wait until Monday! --Gizmos 11:54, 4 November 2011 (PDT)

I have ordered an additional run of PC boards for the Elf 2000, Disk/UART/RTC and STG1861. These three boards will be tiled together onto a single panel and sold as a unit, along with a pre-programmed Elf 2000 EPROM and a set of GALs. At this time I don't anticipate offering any other parts with the kit, however everything else you need, including the CDP1802s, are readily available. When the parts are available I will post an announcement to the Yahoo COSMAC Elf and Spare Time Gizmos groups - Gizmos 18 October 2011.

Errata

Parts Lists and Suppliers

Elf 2000 Main Board Parts List
Ref/Desig Manuf. P/N Vendor Stock Description
      RESISTORS
R1, R5, R6, R7, R8 Anchor 330 ohm 1/8W 5% carbon resistor
R2 Anchor 1K ohm 1/8W 5% carbon resistor
R3 Anchor 200 ohm 1/8W 5% carbon resistor
R4 Anchor 3.3K ohm 1/8W 5% carbon resistor
RP1, RP3 Anchor 10K x 9 10 pin SIP
RP2 Anchor 10K x 7 8 pin SIP
RP4 Anchor 10K x 5 6 pin SIP
      CAPACITORS
C1 Anchor 1000uF 16V radial lead aluminum electrolytic capacitor
C2 Anchor 10uF 6V tantalum capacitor
C3 Anchor unused
C4-C24 Anchor 0.1uF ceramic monolithic bypass capacitor (0.1" LS)
      SEMICONDUCTORS
D2, D3, D4, D6 1N914 Anchor Small signal switching diode
D5 1N4001 Anchor 50PIV 1A power diode
D1 unused
VR1 7805 Anchor 5.0V fixed output TO-220 regulator
U1 Intersil CDP1802ACD3 STG 8 bit microprocessor
U2 RCA CDP1861D video co-processor
U3 27C256 Anchor 32K 8 bit EPROM
U4 Hitachi HM62256LP Digi-Key 32K 8 bit low power SRAM 150ns
U5 Dallas DS1210 Digi-Key Nonvolatile SRAM controller
U6 74HC373 Anchor Octal D Latches
U7 Atmel ATF22V10CQZ Digi-Key Flash GAL (quarter power)
U8 74HC04 Anchor Hex inverter
U9 CD4044 Anchor Quad S-R Latches
U10 74HC74 Anchor Dual D Flip Flop
U11 unused
U12, U13, U14 74HC244 Anchor Dual Quad Buffer
U15 Dallas DS123324 JDR 5V 10% TO-92 EconoReset
U16 Dallas DS275 Digi-Key RS-232 transceiver
DISP1-6 TIL311 Jameco LED Hexadecimal Display
LED1-5 Anchor Red T1 LEDs
OSC1 ECS 2100A-035 Digi-Key XC235 3.579545Mhz DIP8 crystal oscillator
      MISCELLANEOUS
B1 CR1225 Mouser Lithium coin cell
BH1225 Digi-Key 500K CR1225 coin cell holder
PB1 Panasonic EVQ-PAD05R Digi-Key P10890S PCB mount push button switch
S1 C&K T101MH9ABE Digi-key CKN1067 SPDT Tiny Toggle Switch, PCB Mount Right Angle
J1 Anchor PCB mount phono jack (Video)
J2 Cui-Stack PJ-102AH Digi-Key CP-102AH high current coaxial power jack (2.1 x 5.5mm)
J3 CommConn 1184-24G2 24 pin dual row stacking header
J4 Anchor PCB mount DE9F
J5 Anchor 20 pin 0.1" dual row header
Anchor DIP8 machined pin IC socket
Anchor DIP8 machined pin oscillator socket
Anchor DIP14 machined pin IC socket
Anchor DIP16 machined pin IC socket
Anchor DIP20 machined pin IC socket (0.300")
Anchor DIP24 machined pin IC socket (0.300")
Anchor DIP24 machined pin IC socket (0.600")
Anchor DIP28 machined pin IC socket (0.600")
Anchor DIP40 machined pin IC socket
#4-40 mounting hardware for VR1
Digi-Key HS104-1 Heat sink for VR1
STG ELF2K-1C Printed circuit board


Switch Panel Parts List
Ref/Desig Manuf. P/N Vendor Stock Description
D0-7, RUN, MP Jameco 76523CR SPST toggle switch
LOAD Jameco 21936CR SPDT toggle switch
INPUT Jameco 28062CR SPDT toggle switch (momentary) or push button
Anchor 20 pin 0.1" dual row header
Anchor 20 pin IDC connector
Anchor 6" 20 conductor ribbon cable
Tap 5 1/2" x 2" x 3/16" ABS (switch panel)
Tap 6 3/4" x 1" x 3/8" Acrylic (side rails)
STG Front panel decal (see Appendix D)


STG1861 Parts List
Ref/Desig Manuf. P/N Vendor Stock Description
      CAPACITORS
C1-C4 Anchor 0.1uF ceramic monolithic bypass capacitor (0.1" LS)
      SEMICONDUCTORS
D1, D2 1N914 Anchor Small signal switching diode
U1, U2 Atmel ATF22V10CQZ Digi-Key Flash GAL (quarter power)
U3 74HC4040 Anchor 12 bit counter
U4 74HC165 Anchor 8 bit parallel in serial out shift register
      MISCELLANEOUS
Anchor DIP16 machined pin IC socket
Anchor DIP24 machined pin IC socket (0.300")
Anchor 12 pin female header strip
Anchor 12 pin wire wrap header strip
Anchor Shorting plugs
Keystone 1560A Mouser 534-1560A #4-40 swage stand offs, 0.125" high, 0.250" diameter
Olander 4-40 1/2" hex nylon M/F standoffs
Olander 4-40 1/4" Philips pan head nylon screws
STG PIXIE-1B Printed circuit board


Disk/UART/RTC/NVR Daughter Board Parts List
Ref/Desig Manuf. P/N Vendor Stock Description
      RESISTORS
R1 Anchor 10M ohm 1/8W 5% carbon resistor
R2 Anchor 330 ohm 1/8W 5% carbon resistor
RP1 Anchor 4.7K 6 pin 5 resistor SIP
      CAPACITORS
C1, C2 Anchor 22pf 0.1" 50V mono ceramic capacitor
C3-C6 Anchor 1uF 35V tantalum capacitor
C7, C8 47uF 6V tantalum capacitor
C9, C10 unused
C11-C17 Anchor 0.1uF ceramic monolithic bypass capacitor (0.1" LS)
      SEMICONDUCTORS
D1, D2, D3 1N914 Anchor Small signal switching diode
D4 Dialight 555-2301 Digi-Key Green 2mm LED (right angle PCB mount)26
U1 Atmel ATF22V10CQZ Digi-Key Flash GAL (quarter power)
U2 74HC245 Anchor Octal bus transceivers
U3 74HC174 Anchor Hex D flip flops w/clear
U4 Dallas DS12887A Jameco Nonvolatile RAM and Real Time Clock
U5 Maxim MAX232 Anchor RS232 Line Driver/Receiver
U6 unused
U7 16C450 Anchor Asynchronous Communication Element (UART)
U8 74HC04 Anchor Hex Inverter
      MISCELLANEOUS
Y1 Anchor 2.4576Mhz HC18 crystal
J1 CommConn 1184-24G STG 24 pin stacking bus connector
J2 GC/Waldom 53856-5010 Digi-key WM18505 Type I CF connector, SMT right angle top mount
J3 Anchor DB9M DB9 male PCB mount
J4 Anchor 40 pin 0.1" shrouded header (IDE)
Anchor DIP16 machined pin IC socket
Anchor DIP20 machined pin IC socket (0.300")
Anchor DIP24 machined pin IC socket (0.300")
Anchor DIP24 machined pin IC socket (0.600")
Anchor DIP40 machined pin IC socket
JP1-JP5 Anchor 2 pin 0.1" header (jumper)
Anchor Shorting plugs
STG ELFDISK-1B Printed circuit board

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