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Write state to unused tape buffer

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Gregor Riepl 2022-08-20 20:31:48 +02:00
parent 5508e77589
commit 9c71e8bbb0
2 changed files with 4 additions and 1 deletions
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1
driver.a65
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@ -38,6 +38,7 @@ BAUD_RATE = 300
rs_status_device_already_initialized = 4 rs_status_device_already_initialized = 4
.export rs_status .export rs_status
rs_status: .byte 0 rs_status: .byte 0
; TODO add a state variable that can be monitored by the BASIC WAIT command
; entry points ; entry points
.code .code

4
mem.cfg
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@ -5,6 +5,8 @@ MEMORY {
RAM: file = %O, start = $7000, size = $0800; RAM: file = %O, start = $7000, size = $0800;
# if we reside in ROM instead, we should have more space available # if we reside in ROM instead, we should have more space available
ROM: file = %O, start = $9000, size = $2000; ROM: file = %O, start = $9000, size = $2000;
# usable memory from the "tape #1 input buffer"
SCRATCH: file = "", start = $027A, size = 191;
} }
SEGMENTS { SEGMENTS {
ZEROPAGE: load = ZP, type = zp; ZEROPAGE: load = ZP, type = zp;
@ -13,5 +15,5 @@ SEGMENTS {
RODATA: load = RAM, type = ro; RODATA: load = RAM, type = ro;
# data and bss should come after the code if they all reside in RAM # data and bss should come after the code if they all reside in RAM
DATA: load = RAM, type = rw; DATA: load = RAM, type = rw;
BSS: load = RAM, type = bss, define = yes; BSS: load = SCRATCH, type = bss, define = yes;
} }