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boards:sbc:sbc_v2:sbc_v1 [2020/11/24 05:25] b1ackmai1er [SBC-V1] |
boards:sbc:sbc_v2:sbc_v1 [2021/04/04 16:00] (current) lynchaj [SBC V1] |
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- | ===== SBC-V1 ===== | + | ====== SBC V1 ====== |
- | The SBC-V1 is the creation of Andrew Lynch. Formerly | + | The SBC-V1 is the creation of Andrew Lynch. Formerly |
- | ===== ===== | + | Historical SBC V1 information can be found here |
- | Picture courtesy | + | [[https://retrobrewcomputers.org/n8vem-pbwiki-archive/0/35845334/ |
+ | [[https:// | ||
- | ===== Changes from V1 ===== | ||
- | The V2 is upward compatible. The main difference is the added jumpers to allow 48k/16k memory mapping as an alternate to 32k/32k. All of the V1 software will run on the V2 with default jumpers. | + | ====== Features ====== |
- | The V2 board has major corrections to the external Bus Master logic to support | + | * Z80 CPU. |
+ | * CP/M support. | ||
+ | * 1024Kb EPROM support. | ||
+ | * 512Kb RAM support. | ||
+ | * 32K paged memory mapping. | ||
+ | * RS232 level serial Interface. | ||
+ | * Parallel port interface. | ||
+ | * Can operate independently as a single board computer | ||
+ | * ECB standard form factor and bus interface. | ||
+ | * Reset button. | ||
+ | * Real time clock with battery backup connector. | ||
+ | * Power on LED. | ||
+ | * Standard molex power connector. | ||
- | The serial interface is jumper configurable to support DTR/DSR protocol (V1 compatible), | + | ====== Pictures ====== |
- | There is an DS1210 on the V2 board to provide 512k SRAM battery backup. The V1 does not have this capability. The RTC SRAM is battery backed on both boards. | + | [[https:// |
- | There is an option jumper on the Parallel Interface connector to strap pin 25 to either GND or +5v. On the V1 board this pin is tied to GND. | + | Picture courtesy [[https:// |
- | + | ||
- | The V1 board has a Power On LED; the V2 board has a HALT(red)/RUN(green) bi-color LED. This is considered extremely cool. | + | |
- | {{https:// | + | [[:boards:sbc:sbc_v2:sbc_v1:gallery|Gallery]] |