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KA10: IMX device stub.
This is a stub for device 574, which is a 12-bit A/D converter with 128 channels. There was only one, attached to the MIT AI lab PDP-10. It's documented in ITS hardware memo #4. This implementation deals with CONO and CONI bits, and accepts a channel number written with DATAO. However, the data returned by DATAI is always 2048. The programmed data rate is ignored and data is always available immediately. It will not generate interrupts.
This commit is contained in:
Lars Brinkhoff
parent
d30dd7d768
commit
85c63e8ca6
@ -321,6 +321,7 @@ extern DEVICE dt_dev;
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extern DEVICE dk_dev;
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extern DEVICE pd_dev;
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extern DEVICE dpy_dev;
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extern DEVICE imx_dev;
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extern DEVICE wcnsls_dev; /* MIT Spacewar Consoles */
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extern t_stat (*dev_tab[128])(uint32 dev, uint64 *data);
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@ -383,6 +384,7 @@ int df10_write(struct df10 *df);
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#define NUM_DEVS_RS 1
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#define NUM_DEVS_TU 1
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#define NUM_DEVS_PD ITS
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#define NUM_DEVS_IMX ITS
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#define NUM_DEVS_DPY USE_DISPLAY
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#define NUM_DEVS_WCNSLS USE_DISPLAY
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#define NUM_DEVS_IMP 0
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111
PDP10/ka10_imx.c
Normal file
111
PDP10/ka10_imx.c
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@ -0,0 +1,111 @@
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/* ka10_imx.c: Input multplexor for A/D.
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Copyright (c) 2018, Lars Brinkhoff
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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RICHARD CORNWELL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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This is a device which has 128 A/D channels. It's specific to the MIT
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AI lab PDP-10.
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*/
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#include <time.h>
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#include "ka10_defs.h"
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#define IMX_DEVNUM 0574
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#define IMX_PIA 0000007
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#define IMX_DONE 0000010
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#define IMX_PACK 0000040
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#define IMX_SEQUENCE 0000100
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#define IMX_TEST 0000200
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#define IMX_RATE 0377000
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#define IMX_ASSIGNED 0400000000000LL
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#define IMX_CONO (IMX_PIA | IMX_PACK | IMX_SEQUENCE | IMX_RATE)
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#define IMX_CONI (IMX_PIA | IMX_DONE | IMX_PACK | IMX_SEQUENCE | IMX_TEST | IMX_ASSIGNED)
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#define IMX_CHANNEL 0000177
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t_stat imx_devio(uint32 dev, uint64 *data);
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const char *imx_description (DEVICE *dptr);
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static uint64 status = IMX_ASSIGNED;
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static int initial_channel = 0;
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static int current_channel = 0;
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UNIT imx_unit[] = {
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{UDATA(NULL, UNIT_DISABLE, 0)}, /* 0 */
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};
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DIB imx_dib = {IMX_DEVNUM, 1, &imx_devio, NULL};
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MTAB imx_mod[] = {
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{ 0 }
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};
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DEVICE imx_dev = {
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"IMX", imx_unit, NULL, imx_mod,
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1, 8, 0, 1, 8, 36,
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NULL, NULL, NULL, NULL, NULL, NULL,
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&imx_dib, DEV_DISABLE | DEV_DIS | DEV_DEBUG, 0, NULL,
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NULL, NULL, NULL, NULL, NULL, &imx_description
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};
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static int imx_sample (void)
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{
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int sample = 2048;
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if (status & IMX_SEQUENCE)
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current_channel = (current_channel + 1) & IMX_CHANNEL;
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else
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current_channel = initial_channel;
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return sample;
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}
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t_stat imx_devio(uint32 dev, uint64 *data)
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{
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DEVICE *dptr = &imx_dev;
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switch(dev & 07) {
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case CONO|4:
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status &= ~IMX_CONO;
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status |= *data & IMX_CONO;
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current_channel = initial_channel;
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break;
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case CONI|4:
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status |= IMX_DONE;
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*data = status & IMX_CONI;
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break;
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case DATAO|4:
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initial_channel = *data & IMX_CHANNEL;
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break;
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case DATAI|4:
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*data = imx_sample();
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if (status & IMX_PACK) {
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*data <<= 24;
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*data |= imx_sample() << 12;
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*data |= imx_sample();
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}
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break;
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}
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return SCPE_OK;
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}
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const char *imx_description (DEVICE *dptr)
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{
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return "A/D input multiplexor";
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}
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@ -137,6 +137,9 @@ DEVICE *sim_devices[] = {
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#endif
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#if NUM_DEVS_IMP > 0
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&imp_dev,
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#endif
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#if NUM_DEVS_IMX > 0
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&imx_dev,
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#endif
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NULL
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};
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3
makefile
3
makefile
@ -1104,7 +1104,8 @@ KA10 = ${KA10D}/ka10_cpu.c ${KA10D}/ka10_sys.c ${KA10D}/ka10_df.c \
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${KA10D}/ka10_lp.c ${KA10D}/ka10_pt.c ${KA10D}/ka10_dc.c \
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${KA10D}/ka10_rp.c ${KA10D}/ka10_rc.c ${KA10D}/ka10_dt.c \
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${KA10D}/ka10_dk.c ${KA10D}/ka10_cr.c ${KA10D}/ka10_cp.c \
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${KA10D}/ka10_tu.c ${KA10D}/ka10_rs.c ${KA10D}/ka10_pd.c
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${KA10D}/ka10_tu.c ${KA10D}/ka10_rs.c ${KA10D}/ka10_pd.c \
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${KA10D}/ka10_imx.c
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KA10_OPT = -DKA=1 -DUSE_INT64 -I $(KA10D) -DUSE_SIM_CARD
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# ${KA10D}/ka10_imp.c sim_imp.c sim_ncp.c sim_tun.c
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