Avalon2: Difference between revisions
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=== [http://downloads.canaan-creative.com/hardware/A3255/prototype/FIRMWARE/2013-11-08/ 2013-11-08] === | === [http://downloads.canaan-creative.com/hardware/A3255/prototype/FIRMWARE/2013-11-08/ 2013-11-08] === | ||
* | * Change `core_count to 64 to compatible with ealier cgminer | ||
* | * Software should follow equation below when handle A3255 based miner | ||
nonce_send_to_pool = nonce_receive_from_miner-0xc0 | nonce_send_to_pool = nonce_receive_from_miner-0xc0 | ||
Revision as of 11:21, 10 November 2013
Avalon2 is the second machine of Avalon project. using the 55nm ASIC chips
Prototype
Firmware
TIMEOUT
- TIMEOUT的有效值范围为[0,255]，FPGA controller根据TIMEOUT的配置来控制申请/计算任务的时间。当TIMEOUT值配置为1时，FPGA controller会每隔0.033s申请一次任务，也表示芯片已计算完当前HASH区间。
- TIMEOUT配置与申请/计算任务时间间隔的公式为
TIME_OF_MINER_FINISH_HASH_RANGE = TIMEOUT * 0.033s TIMEOUT = TIME_OF_MINER_FINISH_HASH_RANGE / 0.033s
- 若FPGA controller连接的一个小模块上的计算能力为10GHs（10个芯片，每芯片1G），则FPGA controller申请任务的时间间隔为
2^32 / 10*1000*1000*1000 = 0.4s 0.4s/0.033s = 12 # TIMEOUT应配置为12
2013-11-08
- Change `core_count to 64 to compatible with ealier cgminer
- Software should follow equation below when handle A3255 based miner
nonce_send_to_pool = nonce_receive_from_miner-0xc0
2013-11-05
- Upload the 703n firmware
- Upload the FPGA controller firmware
- Support 8, 16, 24 miners, 8 and 16 have tested
- 32 miners not working
- Support 6 ~ 10 chip in each miner, 6 and 10 have tested
2013-10-07
- Only support 16 miners, each miner have 6 A3255