2 layers248.9 × 139.7 mm
GIMIX DMA Floppy
roberto314/GIMIX_reproduction
Reproducing SS-50 and SS-30 cards and GIMIX Ghost Case and Mainboard
138 parts1BSD-2-Clause
2 layers248.9 × 139.7 mm
6809 Plus EPROM Version
roberto314/GIMIX_reproduction1Reproducing SS-50 and SS-30 cards and GIMIX Ghost Case and Mainboard
- Size
- 248.9 × 139.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 167
- Nets
- 316
- Pads
- 1,373
- Tracks, vias
- 7,382, 716
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Jun 2026
- Updated
- 25 Jul 2026
Overview
6809 Plus EPROM Version is an open-source printed circuit board by roberto314, from the roberto314/GIMIX_reproduction repository on GitHub, published under the BSD-2-Clause licence. It is a 2-layer board of 248.9 × 139.7 mm with 167 parts on 316 nets, routed with 7,382 tracks and 716 vias.
It is built around the 74LS640FP-E, 74LS240DC and 74LS00SC, with the 74LS04PC, 74LS136PC and 74LS161DC among its other parts. Its parts include 54 ICs, 43 capacitors, 27 resistors, 5 diodes and 3 transistors.
Main components
12
74LS640FP-E
SOP-20-20℃~+75℃ 15mA 24mA 4.75V~5.25V 74LS 8 Bidirectional Output enable Tri-State SOP-20 Buffers, Drivers, Receivers, Transceivers ROHSRenesas ElectronicsBuffers, Drivers, Receivers, Transceivers74LS240DC
--55℃~+125℃ 1 15mA 18ns@5V,45pF 24mA 29mA 4.75V~5.25V 74LS Output enable Schmitt trigger Tri-State - Buffers, Drivers, Receivers, TransceiversTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters74LS136PC
PDIP-140℃~+70℃ 10mA 4 4.75V~5.25V 74LS Series XOR Gate PDIP-14 Logic Gates ROHSTexas InstrumentsLogic Gates
74LS161DC
-0℃~+70℃ 14ns 32MHz 4 4.75V~5.25V 74LS 93mW Asynchronous Binary Counter Programmable divide ratio、Reset function、Cascade counter、Synchronous counting Rising Edge Synchronous - Counters, DividersTexas InstrumentsCounters, Dividers
74LS174DC
-0ns 0℃~+70℃ 1 16mA 20ns 30MHz 30ns@5V,15pF 4.75V~5.25V 400uA 6 74LS Series 8mA Asynchronous Push-Pull Reset Rising Edge - Flip Flops ROHSonsemiFlip Flops74LS20P-E
DIP-14-20℃~+75℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400mV、500mV 400uA 74LS 800mV 8mA NAND Gate DIP-14 Logic Gates ROHSRenesas ElectronicsLogic Gates74LS30PC
PDIP-140℃~+70℃ 1 1.1mA 18ns@5V,50pF、20ns@5V,50pF 2.7V 2V 4.75V~5.25V 400uA 500mV 74LS Series 8 800mV 8mA NAND Gate PDIP-14 Logic GatesTexas InstrumentsLogic Gates
74LS32SC
-- Logic Gates ROHSTexas InstrumentsLogic Gates74LS74PC
DIP-140ns 0℃~+70℃ 1 2 20MHz 3.5pF 35ns@5V,50pF 4.5ns 4.75V~5.25V 400uA 74LS Series 8mA 8mA Asynchronous Complementary D-Type Rising Edge Set and Reset DIP-14 Flip FlopsTexas InstrumentsFlip Flops74LS02PC
DIP-140℃~+70℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA 8mA NOR Gate DIP-14 Logic Gates ROHSonsemiLogic Gates
README
README.mdGIMIX_reproduction
This Repository is for primarily my GIMIX Ghost Reproduction and various SS-30 and SS-50 Cards.
-
GIMIX DMA SASI board finished, no PALs, production ready, gerbers exported
-
GIMIX DMA SASI board production version, second Regulator added
-
GIMIX dumb two port serial board finished, no PALs, production possible
-
Tanner 64k SRAM board finished, no PALs, production possible
-
GIMIX Baud Rate Generator Board finished, no PALs, production possible
-
GIMIX Floppy DMA finished, no PALs, production possible but not recommended - use production version
-
GIMIX Floppy DMA ready for production, cleanup, different routing
-
GIMIX intelligent 3-port Serial IO Processor finished (RS232 Transceiver are missing), PAL Contents missing, Firmware found.
-
GIMIX Motherboard with onboard Baudrate generator, done, production possible
-
GIMIX Motherboard without onboard Baudrate generator, done, production possible
-
GIMIX 256k SRAM done, PAL missing but should not be too difficult to figure out, production possible, mods for 62256 chips instead of original 6264. Battery backup won't work with 62256 chips!
-
GIMIX 6809 CPU Plus - done, production NOT possible, redesign with GAL or fast EPROM needed, FPLA Contents missing
-
GIMIX 6809 CPU Plus Plus - done, This is a production version of the CPU+ board. Changes are: fast EPROM instead of FPLA, one of the four EPROM Sockets is now for a 28-pin EPROM
-
GIMIX CRC Generator board - work started but PAL contents missing, schematic missing (a couple of traces need testing), production NOT possible
-
GIMIX 6809 CPU III - layout finished but PAL contents missing (some may be registerd - GMX 010 type), production NOT possible
-
GIMIX Ghost 6800 - layout finished but some ICs are very rare, production might not be sensible, maybe a redesign with more available components.
Parts
167| Qty | Value | Footprint | References |
|---|---|---|---|
| 35 | ? | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25 +19 |
| 7 | ? | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C2, C3, C4, C5, C6, C7, C8 |
| 6 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R5, R8, R11, R13, R18 |
| 6 | DS8T28N | Package_DIP:DIP-16_W7.62mm | U37, U38, U41, U42, U44, U45 |
| 4 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R10, R14, R23 |
| 4 | 4k7 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R17, R22, R27 |
| 4 | ? | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R12, R25, R26 |
| 3 | 27C32 | Package_DIP:DIP-24_W15.24mm | U4, U5, U6 |
| 3 | 680E | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3, R16 |
| 3 | 74LS00 | Package_DIP:DIP-14_W7.62mm | U15, U51, U52 |
| 3 | 74LS04 | Package_DIP:DIP-14_W7.62mm | U10, U26, U54 |
| 3 | ? | Diode_THT:D_DO-34_SOD68_P10.16mm_Horizontal | D1, D2, D3 |
| 3 | BC337 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2, Q3 |
| 2 | 10E | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15, R20 |
| 2 | 2114 | Package_DIP:DIP-18_W7.62mm | U8, U9 |
| 2 | 22k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R19, R21 |
| 2 | 27C512 | Package_DIP:DIP-28_W15.24mm | U7, U36 |
| 2 | 74LS136 | Package_DIP:DIP-14_W7.62mm | U17, U35 |
| 2 | 74LS161 | Package_DIP:DIP-16_W7.62mm | U11, U12 |
| 2 | 74LS174 | Package_DIP:DIP-16_W7.62mm | U23, U43 |
| 2 | 74LS20 | Package_DIP:DIP-14_W7.62mm | U18, U25 |
| 2 | 74LS30 | Package_DIP:DIP-14_W7.62mm | U32, U46 |
| 2 | 74LS32 | Package_DIP:DIP-14_W7.62mm | U16, U19 |
| 2 | 74LS640 | Package_DIP:DIP-20_W7.62mm | U49, U50 |
| 2 | 74LS74 | Package_DIP:DIP-14_W7.62mm | U14, U53 |
| 2 | 74S189 | Package_DIP:DIP-16_W7.62mm | U39, U40 |
| 2 | ? | Resistor_THT:R_Array_SIP8 | RP1, RP5 |
| 2 | AM93L422 | Package_DIP:DIP-22_W10.16mm | U21, U22 |
| 2 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U29, U30 |
| 2 | MountingHole | MountingHole:MountingHole_2.7mm | H1, H2 |
| 1 | . | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | JA11-1 |
| 1 | . | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JA11-2 |
| 1 | 100E | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 10k | Resistor_THT:R_Array_SIP6 | RP3 |
| 1 | 12M | Crystal:Crystal_HC49-U_Vertical | Y3 |
| 1 | 16M | Crystal:Crystal_HC49-U_Vertical | Y2 |
| 1 | 1N4001 | Diode_THT:D_DO-34_SOD68_P10.16mm_Horizontal | D4 |
| 1 | 32k768 | Crystal:Crystal_AT310_D3.0mm_L10.0mm_Horizontal | Y1 |
| 1 | 74LS02 | Package_DIP:DIP-14_W7.62mm | U27 |
| 1 | 74LS12 | Package_DIP:DIP-14_W7.62mm | U20 |
| 1 | 74LS123 | Package_DIP:DIP-16_W7.62mm | U13 |
| 1 | 74LS157 | Package_DIP:DIP-16_W7.62mm | U24 |
| 1 | 74LS240 | Package_DIP:DIP-20_W7.62mm | U33 |
| 1 | 74LS244 | Package_DIP:DIP-20_W7.62mm | U48 |
| 1 | 74LS368 | Package_DIP:DIP-16_W7.62mm | U34 |
| 1 | 9511 | Package_DIP:DIP-24_W15.24mm | U3 |
| 1 | ? | Potentiometer_THT:Potentiometer_Bourns_3339P_Vertical | R24 |
| 1 | ? | my_own:C_Trim_3pin | C1 |
| 1 | ? | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JA9 |
| 1 | BA Option | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JA14 |
| 1 | Battery | my_own:Varta_3V200HSKSPCBD | BT1 |
| 1 | Battery ON/OFF | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JA6 |
| 1 | CMOS / NMOS | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JA7 |
| 1 | CONFIG | Package_DIP:DIP-16_W7.62mm | SW2 |
| 1 | Clock | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | JA8 |
| 1 | D_Small_Filled | Diode_THT:D_DO-34_SOD68_P10.16mm_Horizontal | D5 |
| 1 | Interrupt | Connector_PinHeader_2.54mm:PinHeader_2x09_P2.54mm_Vertical | JA12 |
| 1 | LM7812_TO220 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U28 |
| 1 | LM7905_TO220 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U31 |
| 1 | MC6809 | Package_DIP:DIP-40_W15.24mm | U47 |
| 1 | MC6840 | Package_DIP:DIP-28_W15.24mm | U2 |
| 1 | MM58167 | Package_DIP:DIP-24_W15.24mm | U1 |
| 1 | NMI Option | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JA13 |
| 1 | OPTION | Package_DIP:DIP-16_W7.62mm | SW1 |
| 1 | RESET Conn. | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | CA1 |
| 1 | ROM1 | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | JA2-2 |
| 1 | ROM1 | Connector_PinHeader_2.54mm:PinHeader_2x07_P2.54mm_Vertical | JA2-1 |
| 1 | ROM2 | Connector_PinHeader_2.54mm:PinHeader_2x07_P2.54mm_Vertical | JA3-1 |
| 1 | ROM2 | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | JA3-2 |
| 1 | ROM3 | Connector_PinHeader_2.54mm:PinHeader_2x07_P2.54mm_Vertical | JA4-1 |
| 1 | ROM3 | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | JA4-2 |
| 1 | ROM4 | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | JA5 |
| 1 | R_Network05 | Resistor_THT:R_Array_SIP6 | RP6 |
| 1 | R_Network07 | Resistor_THT:R_Array_SIP8 | RP4 |
| 1 | R_Pack04_SIP_Split | Resistor_THT:R_Array_SIP8 | RP2 |
| 1 | SS-50 Bus | my_own_conn:SS-50_new | P1 |
| 1 | Software Writeprotect Option | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | JA10 |
| 1 | TestPoint A | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP1 |
| 1 | Timer | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | JA1 |
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Questions
How big is the 6809 Plus EPROM Version PCB?
It measures 248.9 × 139.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 6809 Plus EPROM Version use?
167 parts, built around the 74LS640FP-E, 74LS240DC, 74LS00SC and 74LS04PC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the 6809 Plus EPROM Version KiCad files?
From the roberto314/GIMIX_reproduction repository on GitHub, at the commit this page was made from: the board is boards/GIMIX 6809 CPU Plus/6809 Plus EPROM Version/6809 Plus EPROM Version.kicad_pcb and its schematic boards/GIMIX 256k SRAM/GIMIX 256k SRAM/GIMIX 256k SRAM.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 6809 Plus EPROM Version design in my own project?
Its repository publishes it under the BSD-2-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).