2 layers21.6 × 41.9 mm
C64-Prog Adapter LB
TMO2018/C64-ROM-Adapter-Longboard
Flash ROM replacement for the 24 pol ROMs
10 parts7GPL-3.0
2 layers19 × 31.7 mm
C64-ROM Adapter LB
TMO2018/C64-ROM-Adapter-Longboard7Flash ROM replacement for the 24 pol ROMs
- Size
- 19 × 31.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 34
- Pads
- 111
- Tracks, vias
- 361, 39
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 6 Apr 2021
- Updated
- 6 Apr 2021
Overview
C64-ROM Adapter LB is an open-source printed circuit board by TMO2018, from the TMO2018/C64-ROM-Adapter-Longboard repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 19 × 31.7 mm with 21 parts on 34 nets, routed with 361 tracks and 39 vias.
Its parts include 2 switches, 1 IC and 1 connector. It belongs with the interfaces and adapters boards of this library.
README
README.mdC64-ROM-Adapter-Longboard
Flash ROM replacement for the 24 pol ROMs
The board serves for adapting a CHARACTER (U5, 4k, 2332), KERNAL (U4, 8k, 2364) or BASIC (U3, 8k, 2364) ROM to a 39SF010A (16x8k) / 39SF020A (32x8k) / 39SF040A (64x8k) 5V FLASH-ROM. The pin out of both ICs are slightly different and need adaptation. Furthermore, it allows to access different character sets (up to 32/64/128), kernals (up to 16/32/64) or basics (up to 16/32/64) or a combination of these three ROM typs which can be selected via DIP switch or/and the pin header (A12 to A18) on the module.
The pin header is connected in a way, that the selection can either be accomplished with switches or a microcontroller like an Arduino etc.
Only one ROM-type (KERNAL or BASIC or CHARACTER) at the same time is allowed.
You can program the FLASH-ROM before soldering or with a special program adaptor after soldering. The second way allows you to reprogram the FLASH-ROM later without resoldering. On the BACK view there are the program pads JA13 to JA18, JWE1 and JOE1.
It should be possible to use the ROM-Adapter in a 1541 floppy drive with 24 pol ROMs (2364) too.
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | Conn_01x01_Female | Measurement_Points:Measurement_Point_Round-SMD-Pad_Small | JA13, JA14, JA15, JA16, JA17, JA18, JOE1, JWE1 |
| 7 | Conn_01x01_Female | footprint:Pin_Header_Straight_1x01_Pitch2.54mm_TMO | A12, A13, A14, A15, A16, A17, A18 |
| 2 | 4k7x4 | Resistors_SMD:R_Array_Convex_4x0603 | RN1, RN2 |
| 2 | SW_DIP_x06 | footprint:SW_DIP_SPSTx06_DHN_W7.4mm_P1.27mm | SW1, SW2 |
| 1 | 2364_Socket | footprint:DIP-24_2332_2364_Socket | J1 |
| 1 | SST39SF010/020/040 | footprint:TSOP-I-32_11.8x8mm_P0.5mm_hand_soldering | U1 |
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Questions
How big is the C64-ROM Adapter LB PCB?
It measures 19 × 31.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the C64-ROM Adapter LB use?
21 parts. 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 C64-ROM Adapter LB KiCad files?
From the TMO2018/C64-ROM-Adapter-Longboard repository on GitHub, at the commit this page was made from: the board is C64-ROM-Adapter-LB/Rev1_1/C64-ROM-Adapter-LB.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the C64-ROM Adapter LB design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).