Systems Concepts DK-10

The Systems Concepts DK-10, or 'Datapoint Kludge', is a PDP-10 periheral to attach up to 16 serial lines. It was used on the MIT Artifical Intelligence Laboratory KA10 computer running ITS.

DATAO bits

Unused															IE	Base address
00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35

• IE - Interrupt enable

The base address specifies a region in physical memory holding a word pair for each line. The first word is the character count, and the second word is a PDP-10 byte pointer with the halves swapped. When outputting data, the DK-10 will fetch a character according to this information and update the word pair in memory.

DATAI bits

Unused														Line				Unused											Character
00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35

The DK-10 has a 16 character wide input FIFO. DATAI will read from this queue, supplying information about both the character received and from which line.

CONI bits

Unused														Line				Unused									OD	I	B	P	N	ID	PIA
00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35

• OD - Output done
• I - State of selected input line
• B - Output line busy
• P - Parity error
• N - Non existing memory
• ID - Input done
• PIA - PI channel assignment

CONO bits

Unused																		Reset	H	Line				Speed			Function			P	N	ID	PIA
00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35

• H - Makes function apply to selected line through highest
• P - Clear parity error
• N - Clear non existing memory
• ID - Clear input done
• PIA - PI channel assignment

External links

• Hardware memo 12: DK-10 Programming