This is a replica of the Commodore CP/M cartridge, with which it was possible to use CP/M in version 2.2.
In the course of my other Z80 cartridge project here on GitHub, I had first rebuilt the original Commodore CP/M cartridge for analysis purposes.
I kept as much as possible to the original board and only adapted a few footprints to the current parts supply. The board is identical to the original board in dimensions and drillings, so that it also fits into the case of the Commodore version.
Due to the 1:1 reproduction, this cartridge has of course all the corresponding "problems" in terms of compatibility.
I have the card in both 407er, as well as 469 board to run without problems. The installed VIC apparently played no role.
But the used components on the CP/M board do play a role.
Normally "LS" types should be used, thus 74LS00, 75LS04, etc..
But it also helps to try "ALS" and "HCT" types here and there. Unfortunately, I cannot give an ideal recipe here. Only the hint that in the 407 board everything in "LS" is without problems.
As mentioned earlier, this parts list should work exactly the same on the older boards. If there are problems, you can try to exchange single parts against "ALS" or "HCT" types. A version with 4MHZ is also sufficient for the CPU.
Please then not all at once, but always first only individually.
| # | Manufacturer | Part Number | Case | Description | Quantity |
|---|---|---|---|---|---|
| 1 | Central Semiconductor | 2N3906 | TO-92 | Bipolar Transistor PNP Amplifier/Switch 40V 200mA 3-Pin TO-92 Through Hole Box | 1 |
| 2 | Fair-Rite | 2743005112 | Axial | Ferrite Beads Axial 91Ohm 100MHz T/R | 6 |
| 3 | Vishay BCcomponents | A100J15C0GF5TAA | Axial | Cap Ceramic 10pF 50V C0G 5% Axial 125C T/R | 6 |
| 4 | Vishay BCcomponents | A470J15C0GF5TAA | Axial | Cap Ceramic 47pF 50V C0G 5% Axial 125C T/R | 1 |
| 5 | KEMET | C330C104J5R5TA | Dipped | Cap Ceramic 0.1uF 50V X7R 5% Radial 5.08mm 125C Bulk | 12 |
| 6 | Yageo | CFR-25JB-52-1K2 | Axial | RES 1.2K OHM 1/4W 5% AXIAL | 1 |
| 7 | Yageo | CFR-25JB-52-2K2 | Axial | RES 2.2K OHM 1/4W 5% AXIAL | 5 |
| 8 | Yageo | CFR-25JB-52-22R | Axial | RES 22 OHM 1/4W 5% AXIAL | 1 |
| 9 | Yageo | CFR-25JB-52-220R | Axial | RES 220 OHM 1/4W 5% AXIAL | 1 |
| 10 | Vishay Dale | CSC09A014K70GPA | SIP | Resistor Networks & Arrays 9pin 4.7Kohms 2% Bussed | 3 |
| 11 | Vishay | MAL203036479E3 | Axial | Cap Aluminum 47uF 25V -10% to 50% (6 X 10mm) Axial 4.8 Ohm 100mA 3000 hr 85C Taped in Box | 1 |
| 12 | Texas Instruments | SN74LS00N | PDIP | IC, 74LS, 74LS00, DIP14, 5.25V | 1 |
| 13 | Texas Instruments | SN74LS04N | PDIP | IC HEX INVERTER 14-DIP | 1 |
| 14 | Texas Instruments | SN74LS12N | PDIP | Logic Gates Triple 3-input Positive-NAND gates with open collector outputs 14-PDIP 0 to 70 | 1 |
| 15 | Texas Instruments | SN74LS74AN | PDIP | TEXAS INSTRUMENTS SN74LS74AN Flip-Flop, with Set and Reset, Complementary Output, Differential, Positive Edge, D, 13 ns, 33 MHz | 2 |
| 16 | Texas Instruments | SN74LS245N | PDIP | IC TXRX NON-INVERT 5.25V 20DIP | 3 |
| 17 | ON Semiconductor | SN74LS283N | PDIP | Binary Full Adder Single 4-Bit 16-Pin PDIP Box | 1 |
| 18 | ON Semiconductor | SN74LS367AN | PDIP | I.C. SN74LS 367 AN | 1 |
| 19 | Texas Instruments | SN74LS373N | PDIP | Latch Transparent 3-ST 8-CH D-Type 20-Pin PDIP Tube | 1 |
| 20 | Ixys Zilog | Z84C0008PEG | DIP | IC MPU Z80 8MHZ 40DIP | 1 |
The PCB can either be ordered directly from PCBWay, or you can create it yourself from the Gerber files available here.
If you liked my project, I would be very happy about a small coffee donation.
The contents of this repository, with the exception of the Docs and Software directories, are released under the following license:
- the "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License" (CC BY-NC-SA 4.0) full text of this license is included in the LICENSE.CC-NC-BY-SA-4.0 file and a copy can also be found at https://creativecommons.org/licenses/by-nc-sa/4.0/