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1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
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1.Brand new interactions and interfaces
2.Smooth support for design sizes of over 5,000 devices or 10,000 pads
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Ongoing
STD ZXcard II
License: CERN Open Hardware License
Mode: Editors' pick
- 5
Update time：
2023-05-02 12:48:20
Creation time：
2017-01-05 18:52:25
Description
ZXCard is a hardware for ZX81 ZX spectrum* that allows you to load you favorite programs from a SD card instead of cassettes. It connects into the standard expansion port.
When booting the ZX, it boot from the Menu ROM included in the hardware. You can then select you file (TAP format) and it will be loaded into ram and executed. After reset you will be presented the menu again.
The hardware includes:
ROM for the menu and control
ROM switch to switch in and out Menu ROM and cartridge RAM
SD card interface with parallel to serial support
Kempston Joystick interface
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 1u | C1,C2,C3,C4,C5,C6,C7 | C1 | 7 |
| 2 | JUMPER-2 | JP1 | 1X02 | 1 |
| 3 | JUMPER-3 | JP2 | 1X03 | 1 |
| 4 | 204-10UYC/S530-A3 | LED1 | LED-3MM/2.54 | 1 |
| 5 | ZX Spectrum edge connector | P1 | EDGE_CONNECTOR_ZX_SPECTRUM | 1 |
| 6 | 8x10K | R1 | 1X09_NO_SILK | 1 |
| 7 | 10k | R2,R7 | R3 | 2 |
| 8 | 2k2 | R3,R4,R5 | R3 | 3 |
| 9 | 3k3 | R6,R11,R12 | R3 | 3 |
| 10 | 1k | R8,R9,R10 | R3 | 3 |
| 11 | SPST_ON | S1 | PUSH BUTTON 6X6 90DEGREE | 1 |
| 12 | L78L33ACZ | U1 | TO92-INLINE | 1 |
| 13 | SN74LS541N | U4 | DIP20 | 1 |
| 14 | 27C256AG | U5 | DIP28-600 | 1 |
| 15 | MICRO SD SOCKET | U9 | MICRO SD SOCKET | 1 |
| 16 | DSUB9 | X1 | DB9 | 1 |
| 17 | HD74LS74AP | U2 | DIP14 | 1 |
| 18 | 74LS32 | U3,U16 | DIP14 | 2 |
| 19 | 74LS125 | U6 | DIP14 | 1 |
| 20 | HD74LS08P | U7 | DIP14 | 1 |
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